Malicious PDF — malware analysis report

Static analysis result for SHA-256 3beda0207b2b9e5e…

MALICIOUS

PDF

89.8 KB Created: 2021-09-19 11:36:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: cae2b26951b3f53f005b10ab5fdac0ac SHA-1: d3cdacda3d31555b22f5e8c2144ff648df931ada SHA-256: 3beda0207b2b9e5ebc47b5e9b21adc48568b74f0f4b768b18b94bc09fd3c3a13
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The 'SE_CALLBACK_LURE' heuristic indicates the document is designed to trick users into calling a phone number, consistent with callback phishing or tech-support scams. While no scripts were explicitly extracted, the presence of numerous embedded URLs pointing to potentially compromised websites suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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) 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://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/1ccfb3e59d05d2c5a41145cb15d12ec3/65271830746.pdf In PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/8333ad7a1141c796c72bea8a2463a7df/dabujulesorawemobujafaka.pdfIn PDF document text
    • http://baraanduliaptti.org/userfiles/file/fevosumunaxunomo.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/ada5a8f037fd2bacabb8903500570e07/dapapukofixonadugereko.pdfIn PDF document text
    • https://pnvvr.ro/userfiles/file/13131563433.pdfIn PDF document text
    • https://synodradomski.pl/userfiles/file/36651085905.pdfIn PDF document text
    • http://praguynakorn.com/praguynakorn/picture/datapro/files/gidukegamulijufegidop.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/161421bfb255d6---35578024804.pdfIn PDF document text
    • https://sportsht.com/userfiles/file/78551259516.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/161337517cc323---nunajirujagabujesigox.pdfIn PDF document text
    • http://020tzs.com/baige/images/userfiles/file/mesidunufaworadim.pdfIn PDF document text
    • http://ayrh.internet-match.com/upload/files/34262760853.pdfIn PDF document text
    • https://xn--90ah6akb9e.xn--p1ai/f/file/wojedamivi.pdfIn PDF document text
    • https://hkparkkonutlari.com/image/files/zenufaj.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/831922bf427fd6af478091fa09247dc9/zekodoluge.pdfIn PDF document text
    • http://seanbittinger.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zituxodajixof.pdfIn PDF document text
    • https://mgs-on-track.com/uploads/misc/files/18959647151.pdfIn PDF document text
    • https://shieldtech.cz/ckfinder/userfiles/files/fejopixane.pdfIn PDF document text
    • http://canyonmeadows.org/userimages/bobabugiwixaxapodol.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/kpdq0ltr7rq3dq0ein46e85d08/72485282635.pdfIn PDF document text
    • https://10glazsikeyrosa.ru/file/78983051984.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613c4e35e84fc---pitabirokubudemakokovun.pdfIn PDF document text
    • http://lecostationery.com/files/file/vejemadaludotimopud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=apk+games+for+androidPDF 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_off0000ed6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6F 23152 bytes
SHA-256: a4d0c53289c557a7fd0c41595e848dd97275930b820eb78ea894253ea3974ee3
font_01_sfnt_off0001291e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1291E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14135 10772 bytes
SHA-256: 407778819f8b67fe231c146cd521fbc916619bb3a7958930cd7525b641dda98c

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