Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f5e19f13a06f31e…

MALICIOUS

PDF

59.6 KB Created: 2021-09-14 01:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e1a238c0e08fcc1f0e2634c80045664f SHA-1: 00efecb34cba95465cff160de6d82f5b420ae00f SHA-256: 7f5e19f13a06f31e91d9e4864d16a265eedf108374063ad95d60c19ca0988478
124 Risk Score

Malware Insights

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

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous embedded URLs, many of which point to PDF files on potentially disposable hosting, suggesting a link farm or phishing lure. The presence of these links and the overall detection profile strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6435

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://azseal.net/uploads/userfiles/file/nekozafosifuni.pdf In PDF document text
    • http://rentbucharest.net/images/userfiles/6609658582.pdfIn PDF document text
    • https://mclandpin.com/calisma2/files/uploads/suwagebitomudafazap.pdfIn PDF document text
    • http://xn--b1amishc2fb.xn--p1ai/ckfinder/userfiles/files/13742227854.pdfIn PDF document text
    • http://bibliotekaludwin.pl/img/upload/files/93917427991.pdfIn PDF document text
    • http://nattukoottam.com/userfiles/file/20502882051.pdfIn PDF document text
    • http://kripasec.com/userfiles/file/japudekuw.pdfIn PDF document text
    • http://profstil.az/userfiles/file/74973067088.pdfIn PDF document text
    • http://tachikawa-derma.biz/ckfinder/userfiles/files/zewuzewadafajipufig.pdfIn PDF document text
    • https://scalper.ir/data/files/file/kidaganu.pdfIn PDF document text
    • http://antonio-pelella.eu/userfiles/files/77885874704.pdfIn PDF document text
    • https://confeccionesruiz.cl/UserFiles/File/49871442162.pdfIn PDF document text
    • http://qazaqbanki.kz/data/content/files/96066438404.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/a68ed4eda2f8eccd53eabc9736b522ba/limarakujiwufezabagipeb.pdfIn PDF document text
    • http://atol-res.pl/uploads/file/15151591845.pdfIn PDF document text
    • https://wtmasonry.com/ckfinder/userfiles/files/70789700646.pdfIn PDF document text
    • https://textosolutionslinguistiques.com/upload/editor/file/37378845258.pdfIn PDF document text
    • https://xn--lenachatka-57b.pl/uploaded/file/15683809555.pdfIn PDF document text
    • http://zzfcw.com/file/fkimg/file/zibenoribiduneg.pdfIn PDF document text
    • http://webinaris.blog/ckfinder/userfiles/publics/files/dopigurikevef.pdfIn PDF document text
    • https://tierrettung-in-katalonien.org/ckfinder/userfiles/files/80371161451.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3bf399769---95225648591.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=how+to+trim+an+audio+file+on+androidPDF link annotation

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