Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d34904ea789e6db…

MALICIOUS

PDF

95.7 KB Created: 2021-06-17 18:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f58696d0c17468e2cbed167867bee02b SHA-1: 0f2d1c158db0316580b1994f4f20ff4be46127a5 SHA-256: 7d34904ea789e6db55daf51cd0bcd2ef0fedabdfff903f5f5ac0135f0a5c5911
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, contains a search query related to a cause of death, likely intended to trick users into clicking the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9467

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://smidgel.ru/uplcv?utm_term=richard+m+snider+cause+of+death PDF link annotation
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/b1e29beffd20fa2e1004ce05ad5cea76/88510946669.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/bazurufuwifilegotim.pdfIn PDF document text
    • http://pokorny-podlahy.cz/UserFiles/File/19345403829.pdfIn PDF document text
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/de37289942c0718f8faa6563e88add13/bedirakeg.pdfIn PDF document text
    • https://oteaexpert.fr/cite_imgs/file/35885970464.pdfIn PDF document text
    • http://rocb-ap.org/file_media/file_image/file/2672878160.pdfIn PDF document text
    • http://fkhd.cz/data/img/13866283910.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1608d17bd5f161---lefonif.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160acbaeb51e16---sumirebojowipugufemig.pdfIn PDF document text
    • https://www.mixedclass.com.au/wp-content/plugins/super-forms/uploads/php/files/7iu3b7guvntc42pitua13399vs/64168041940.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/duwajuvipa.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/77661057451.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ba8414caf6---duwigifinogexol.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/f7qoj909v3qdf4icirsmgtgcr9/wakujexozagifikovigagif.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/6da6fa78aba3bdddd96111947578deb7/fakakivavofekideminot.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/zobosezole.pdfIn PDF document text

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