Malicious PDF — malware analysis report

Static analysis result for SHA-256 f031d6008d41ac6d…

MALICIOUS

PDF

65.2 KB Created: 2021-06-10 09:49:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d964fb4476896849f59f943643ce4574 SHA-1: 413ed4947df22787452cb6cdb34f3943a0678e0c SHA-256: f031d6008d41ac6dceaf1fbeafafdf947cd9eeec0b3eff63160a9d259239ec3e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. The document contains numerous links, many pointing to compromised WordPress upload directories, suggesting it's part of a link farm designed to redirect users to malicious content. The embedded URLs and the document's structure indicate an attempt to lure victims to external sites, likely for phishing or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9134

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://wastran.ru/uplcv?utm_term=question+bank+psychology+pdf
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075943e7ddf5---fipitemuradite.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1eecb19b3---kekenizugila.pdf
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16078193096a3d---fizeromifenowobix.pdf
    • http://bjaimama.com/data/upload/2021/05/file/202105140534484380.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/u70o81e15unqc1tdu50ckvab33/kimipame.pdf
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/39216d98dbe70d1380453a279444fc16/32712387087.pdf
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/m7p906ev7vo22fptd40qc9mle4/rivojolesiropudikogiwal.pdf
    • http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/garuniwoxoriv.pdf
    • https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ceeeafa1b---99559238654.pdf
    • https://faresaldabbous.com/uploads/files/lisojazofi.pdf
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160821b9ab4ebd---mirorezoziwiniketimi.pdf
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/c13321c3db4e50bcdac538a9d85178bc/98635676305.pdf
    • http://ackerviewguesthouse.com/userfiles/file/27340780339.pdf
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/14836f05df1888bb0bcf98702406ce0c/57690735754.pdf
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078b7a5527d6---zalesuxuropakixivavorojab.pdf
    • http://piemonteforyou.it/userfiles/file/sonanenakakuvezewexaru.pdf
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/055ecc70ff13d6028b99efa53aba33a6/76028952460.pdf
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160712ff481a1c---ponubadeg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f184.bin
50b68dbddd861007d2ee1b07a7f9cf832d9b8412496b0c994d675df580806426		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF184 5688 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.