Malicious PDF — malware analysis report

Static analysis result for SHA-256 7320f86a205794e6…

MALICIOUS

PDF

62.3 KB Created: 2021-05-07 03:55:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efa488b01fbe49a34f4d0b7ce4808478 SHA-1: 1c08f434705c1912b7c469dffa1aa8a59d826ef0 SHA-256: 7320f86a205794e60ae4e81ebbb330e2f99db4590d50688e1842978a41fd71e9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a link farm with numerous URLs pointing to compromised WordPress sites and other disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URLs and the overall structure suggest an attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9553

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://abogarestudio.com/userfiles/file/bupabufezeviwivu.pdf
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/9f1c164ac042ed2edb878cabac1367ed/wukefubib.pdf
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080432317edf---pewiparenegolopupazo.pdf
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160902cdf549de---55263291532.pdf
    • http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607da3279ddd7---84155468473.pdf
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160909387eac95---78667825430.pdf
    • https://tigercabinetry.com/wp-content/plugins/super-forms/uploads/php/files/f2ff6521c0fcf0013207583955d0be98/63731585975.pdf
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/9106650b7a39f232949b9c1262c59927/50801759499.pdf
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9634be537---96742350294.pdf
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160815cf2bd723---wijozizetosapilanuwuw.pdf
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070cdebc3c5b---41479612939.pdf
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/6e37b248a7c55fa5b04c9f5634acbbc1/ranovelukukekizibepiz.pdf
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607893e62470a---bupaful.pdf
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607125f618cdd---29467575804.pdf
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/rf60da099thpkjei4sc3njst96/42215912861.pdf
    • https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/po90bhg651kiun5f02q0e9pub4/gegakokesaluse.pdf
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/d929af06b944c498ed3326c439d15248/18037474858.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=medical+dictionary+android+app+free

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