Malicious PDF — malware analysis report

Static analysis result for SHA-256 285264a1b1fc129f…

MALICIOUS

PDF

70.3 KB Created: 2021-06-26 01:37:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 570364a26bf3cb79dca4ab5fd3ea75bf SHA-1: 42b20a7b5342ea4f7a50d61b1b63e786c005e7f0 SHA-256: 285264a1b1fc129ffb267ee2df36134eddcea603b3252bade7ca769c19fb1562
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links pointing to compromised websites, indicating it functions as a link farm. The ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly suggests a phishing or trojan distribution intent. While no scripts were explicitly extracted, the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the presence of many unknown URLs reinforce the malicious nature of this document as a lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4988

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 http://davisfolk.net/clients/1/1f/1f1070e31f35868a9a13f38ee7dc887f/File/58357519159.pdf In PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c381b373665---69897406222.pdfIn PDF document text
    • http://111-orte.de/testarea/cwsCMSlight/media/files/34882735472.pdfIn PDF document text
    • https://mgogs.com/mgfiles/file/saterejufuxivefuxo.pdfIn PDF document text
    • https://www.truegridpaver.com/wp-content/plugins/super-forms/uploads/php/files/a3afc55b0bcfcd255d7b80dafeddc5ac/felorebuwunesati.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cb18e2338c4---nivekutale.pdfIn PDF document text
    • https://floorco.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/ed781daccf64a36057804d7a595ec41b/xevozaboj.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb2a68aabd2---68285497579.pdfIn PDF document text
    • http://bruisedreedfoundation.org/clients/4/4d/4d9d7eec3bf3a09fa0457ace138f6a4e/File/54497912180.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/8b3e35d0ce92864e2370f61bb61ec8e0/3883789721.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/hlh55aorcoekaf3h7ooifrs161/nowezafediviwetu.pdfIn PDF document text
    • https://autotrilogy.com/wp-content/plugins/super-forms/uploads/php/files/cf69beae1daf3596f4352a1860ddd8cd/melegopawiji.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/b6852ab4e55dd7519120b051134f33cd/ligezodutebekujumuti.pdfIn PDF document text
    • http://gramercygrand.ru/files/file/navobifukosazapived.pdfIn PDF document text
    • http://odnoklassniki-files.ru/images/uploads/files/81598156786.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/mh8o7nuebpi3ob6cttbfmgfke6/kenamawigofet.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/5860d41d3bbbb992872f2cbf7d617790/kelotoxozuxawaxizupudu.pdfIn PDF document text
    • http://colorfulmedia.de/fotki/fotki/file/16553297913.pdfIn PDF document text
    • https://comodee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c082bdd2909---40213572642.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/meo9f41kd2n5jrlilk746q24kf/95562368785.pdfIn PDF document text
    • http://change-sexy.com/files/files/80397192481.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/rofimiginezasu.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/87129114623.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=airport+markings+and+signs+pdfPDF link annotation

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