Malicious PDF — malware analysis report

Static analysis result for SHA-256 be75de96b093d65e…

MALICIOUS

PDF

102.0 KB Created: 2021-06-28 03:24:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7f4ba46e44272fc980aaa6e706aa4469 SHA-1: fec951d9239616540bc3870e06bd1e21d88514d6 SHA-256: be75de96b093d65eebd859687bf99158cd741c419daeeea0994bbd4f23f69371
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The document exhibits characteristics of a callback phishing lure, prompting users to call a phone number for urgent matters. It also contains numerous embedded URLs pointing to compromised websites, likely used to host malicious content or redirect users to phishing pages. No scripts were extracted, but the presence of external links and the callback lure suggest an attempt to trick users into divulging sensitive information or executing further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9708

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://medvor.ru/uplcv?utm_term=parental+authorization+for+minors+oci+sample PDF link annotation
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/da9dda2289ffb558555c0743f1dc4edc/xifim.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/aae6913a278492a2c7e6cb3a61ecd00b/rekasorewa.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8b2b0c6a1---musununopis.pdfIn PDF document text
    • https://geniodelweb.com/file/fekomigegipilokarujozewar.pdfIn PDF document text
    • http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160b8ccd49c585---wuxomeromezapuneliv.pdfIn PDF document text
    • https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/9ddec7c7109583ac960a7546cbe2e333/8812910044.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1609b116ea572c---pujazalesupufopirewuwo.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9505fa91cb---24696618066.pdfIn PDF document text
    • http://ahkkpcm.org/userfiles/josenoxasigibijitubiren.pdfIn PDF document text
    • http://thaisomboonautopart.com/userfiles/files/tonuxow.pdfIn PDF document text
    • http://sacmacbook.net/userfiles/file/rinikunutelapi.pdfIn PDF document text
    • http://extintoresorigen.com/images/editor/57602048067.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af81aaa941f---wadokubatamitomadovif.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074215755edf---pivupitubeb.pdfIn PDF document text
    • https://bellevuecommunityfoodbank.org/wp-content/plugins/super-forms/uploads/php/files/725b5cb64cd5305b9c7890ed9c10be33/20964442153.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/e489f5246bc6f3b4fa27445cf9f0d8c8/89108770293.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a7164046953---88147943796.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/518900386ca1109aa3935ed28a38ea32/55854580468.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a4646e0d661---58161096652.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606e3a691d096---87624855166.pdfIn PDF document text
    • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079bb49df968---povovaju.pdfIn PDF document text
    • http://gapoom.com/upload/fckeditor/file/lurot.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160703b5a95789---wosupofobut.pdfIn PDF document text
    • http://stellamaris.cz/userfiles/14055353441.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/f8p3ncrf6nfj4i19e3goa0etih/luzasijomukur.pdfIn PDF document text
    • http://zavalinka.by/var/upload/file/finokome.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11085 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12896 16140 bytes
SHA-256: 00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b
font_02_sfnt_off00013e0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E0E 18504 bytes
SHA-256: 9edf3f475a06eb361397d2d3f06e85e972d6576916c7a5f32ac4645095c9fe94
font_03_sfnt_off00016ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16EE6 10904 bytes
SHA-256: 07769df45a6f850f26a7981e09a68f8ff1999a283a222925340204e5858a3014

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