Malicious PDF — malware analysis report

Static analysis result for SHA-256 3201bbd9b491f9fa…

MALICIOUS

PDF

93.3 KB Created: 2021-08-10 12:11:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 11fba4a9e9d458e405de0465906354e8 SHA-1: 68dec8ca98d30a3ad82670f150029017821ac559 SHA-256: 3201bbd9b491f9fad3f65287b3faa6f6a8a2934dd6c3f3c3b3fb1bee44d4b7c7
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which appear to be compromised WordPress installations or disposable hosting, suggesting a link farm or phishing lure. The presence of the 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document may be instructing users to open a password-protected archive, a common tactic to bypass security filters. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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://laborke.ru/uplcv?utm_term=how+to+play+mx+vs+atv+reflex+online PDF link annotation
    • http://thaisomboonautopart.com/userfiles/files/maxotazifawu.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160abb2891b2f7---83776008240.pdfIn PDF document text
    • https://whiteelephant.co.in/wp-content/plugins/super-forms/uploads/php/files/512a481c113c88bde073e3aabbd6f82d/riluxavuganafipasozufuru.pdfIn PDF document text
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/ga6b2pfl9jpgit6jv951djto9t/75345783329.pdfIn PDF document text
    • https://esperanzadeavila.com/fotos/file/19374369497.pdfIn PDF document text
    • http://cafesezony.ru/fck_editor_files/files/57817980223.pdfIn PDF document text
    • https://dwitunggaljaya.com/sitefiles/file/fomarifelufugadubiziwi.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609579eb5ce91---vimoxab.pdfIn PDF document text
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/58015000577.pdfIn PDF document text
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/95238497438.pdfIn PDF document text
    • http://esejsc.com/upload/files/nozipiwutobasefuvak.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac97503a70e---27025254927.pdfIn PDF document text
    • http://psychologkmalinowska.pl/ckfinder/userfiles/files/15913389578.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/79816000970.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160823dc81d615---gufaratigunaxajefenune.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8cbb16068---50678330192.pdfIn PDF document text
    • http://dynamic1984.com/user_file/file/xuborodologirowijove.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/1b4c2fe54f2de262c8eeba66d52266ec/3465451250.pdfIn PDF document text
    • http://tokyoracing.hu/userfiles/file/xunisaloretijizab.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/rha0o925s3qtars1s9tt78ep8m/powixarafixuzudapejap.pdfIn PDF document text
    • http://dulwichtaxi.com/survey/userfiles/files/85675273006.pdfIn PDF document text
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/3v3n7so1g213p6o4scbhevk7vn/45859419297.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/je4tupirrdiomg1acqiricpgpg/69060523202.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000121e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121E4 17012 bytes
SHA-256: 10384ee5d557a257ac0f77002dd1bce9b8f80fed302d3d5374f887f8a057ed56
font_02_sfnt_off00014e14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E14 10876 bytes
SHA-256: 61a17f80b6fbabc74c03b67dbef0ea759131aed02a6a5d9c6c0f92887f88d7ce

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