Malicious PDF — malware analysis report

Static analysis result for SHA-256 e490064e44c5a009…

MALICIOUS

PDF

93.6 KB Created: 2021-07-06 04:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 780500b0a025392269c58cd912c2a0f8 SHA-1: d3c711829215f30a704a26f04fbe26724dc8aea7 SHA-256: e490064e44c5a0097f365742270a7814c0e0bc548e02cda6ca5a2cdb2a596383
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains a link farm pointing to compromised CMS upload storage and disposable hosting, suggesting it's part of a phishing or scam campaign. The 'SE_CALLBACK_LURE' heuristic indicates the document likely prompts the user to call a phone number, a common tactic in tech-support scams or callback phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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 http://franzoesischebulldoggen.eu/userfiles/file/dutopelumilupenu.pdf In PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c9e629b5752---38892610904.pdfIn PDF document text
    • https://ka-base.no/images_content/file/pafapovejedozizedufow.pdfIn PDF document text
    • https://oncallanatomist.org/ckfinder/userfiles/files/33302259763.pdfIn PDF document text
    • https://childconcern.in/trila/userfiles/file/fuzabe.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d4bb700ad---biwevotegu.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/4ab81e9d72aa910defa87f0310f4f1c5/kexakopisisikirumufufid.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b818788f11e---30918998516.pdfIn PDF document text
    • http://itineraire-consulting.com/ckfinder/userfiles/files/didimugozili.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/30f108eda62b1528ab32e79e9b3dd897/wemesezuzagunubilotewonot.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a75f805170e---wobewozolobuxagatevovewed.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a802cb38ad1---62410873532.pdfIn PDF document text
    • http://www.motionmantra.com/userfiles/files/vivekul.pdfIn PDF document text
    • https://beauti-full.ru/uploads/files/zalopovapepolinexanasutak.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e39bb509992---voduvasesubawoxujusu.pdfIn PDF document text
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607da7911074f---wokedafafoxudipogak.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/5rsq4chjhmp1tr688n8esm551v/pubavez.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/dddf4e3629f5ccae9a74f0d367a84a2f/814388976.pdfIn PDF document text
    • http://orbitsecurity.qa/pro_mvp_tech/uploads/file/48018788993.pdfIn PDF document text
    • http://salinahighschool1968.com/clients/3/33/33fcb9b832a528c934b1ac42c6b88a99/File/tekegusufibibaxewe.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160963cfb69d01---98496988988.pdfIn PDF document text
    • https://mollis.rs//files/vibamimuzosin.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6d69c2095---11111093357.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/dc4250e55205dc88f0bc62ec2ee7a2b4/12137955034.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd6c0766d0---46115701779.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/wevudemaxudubumadago.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=brightwater+treatment+plantPDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10949 10548 bytes
SHA-256: 88232aca4d6cab392e77962db7e6e38950c38cf907a4a858ce0f2c98f0127e46
font_01_sfnt_off00012127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12127 17568 bytes
SHA-256: bc7c65c9e5cd969176a5eaf603305c2a4ac7a4139a4199c4ab06323d634b87a3
font_02_sfnt_off00014f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F6E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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