Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a6a7193a67fb95…

MALICIOUS

PDF

54.5 KB Created: 2021-10-20 12:51:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 49f0fb5f7b90d084a22e44990c2de588 SHA-1: 7ed308889072c0a88ee4d78bc20e23b80ea9f2cf SHA-256: e3a6a7193a67fb95297992a3e40b58748b7d0a2c068c01502fee9856297d0c6c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links pointing to various domains, indicating a link farm designed to direct users to potentially malicious content. Heuristics suggest these links are on disposable hosting and may be associated with compromised CMS uploads. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6657

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://pfollowers.com/ci/userfiles/files/86903597224.pdf In PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1613b9040c2e49---50575584342.pdfIn PDF document text
    • http://jawarakreasi.com/file/sopogile.pdfIn PDF document text
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/errg7fr6pqrinrt6k0hrqrcgc2/vefanebazufabenadoriliw.pdfIn PDF document text
    • http://clingac.com/d/files/wagenawur.pdfIn PDF document text
    • http://mim2010.ru/userfiles/file/vovix.pdfIn PDF document text
    • http://kiavysocina.cz/UserFiles/File/44696787197.pdfIn PDF document text
    • https://jensbrode.de/files/file/14218405036.pdfIn PDF document text
    • https://h016s5or78-du3.com/contents/files/kirujarume.pdfIn PDF document text
    • https://butagallery.com/userfiles/files/64043398215.pdfIn PDF document text
    • http://studiopassarotti.it/userfiles/files/9128541163.pdfIn PDF document text
    • http://purepoem.com/resource/docContentImg/file/2021-10-10/90bc8f301d263fa29a6155e3540e39d6.pdfIn PDF document text
    • https://taitaosuckhoe.com/uploads/files/57316399885.pdfIn PDF document text
    • http://www.cda.org.hk/ckfinder/userfiles/files/15748719719.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138c0059e20c---bejupariwidari.pdfIn PDF document text
    • http://aktifimmo.lu/userfiles/files/bikulolutovelezemepiniwo.pdfIn PDF document text
    • https://vwb.mrv-educationservices.com/content_file/files/9297078949.pdfIn PDF document text
    • http://polipadel.com/userfiles/file/tisowosozibeki.pdfIn PDF document text
    • https://tl-systems.hu/files/files/ratilugunato.pdfIn PDF document text
    • https://fainitelecommunication.com/public/editorfiles/file/40135447562.pdfIn PDF document text
    • http://piemonteforyou.it/userfiles/file/84529564695.pdfIn PDF document text
    • https://speakingparrot.com/upload/ckfinder/files/44690008075.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/EqozwcbAC44/uplcv?utm_term=caramelized+apples+without+brown+sugarPDF link annotation

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