Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bad640988f1a857…

MALICIOUS

PDF

48.0 KB Created: 2021-09-28 00:31:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 00de87c79bb664f861c9f7adbbf2c285 SHA-1: ec029f137cad74cc9cceb0c2bce9b0b3b151415d SHA-256: 0bad640988f1a8573b1b1b8a75e2a202e51e6918dbf6592ff831cf77f346bcd2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. The PDF contains numerous embedded URLs, many of which point to disposable hosting and are structured as a link farm, suggesting an attempt to distribute or redirect to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URIs strongly suggest an intent to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6966

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 https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/5a5aa5a536754c139f814b0b3610340a/23021043513.pdf In PDF document text
    • https://xn--z4qq44i.xn--kpry57d/upload/actfiles/xusozo.pdfIn PDF document text
    • http://precisao.net/files/files/gekusazizit.pdfIn PDF document text
    • http://sprostredkovanieuverov.sk/res/file/78137974327.pdfIn PDF document text
    • http://sanmorales.es/userfiles/files/febox.pdfIn PDF document text
    • http://canoeing.by/pics/files/loweligajiwe.pdfIn PDF document text
    • http://ozkayalartrans.com/userfiles/file/mapasi.pdfIn PDF document text
    • http://jngf.cn/files/file/37253621039.pdfIn PDF document text
    • https://nvsrolko.org/ckfinder/userfiles/files/piwomubagoguse.pdfIn PDF document text
    • http://nationalherbo.com/userfiles/file/jozelibagasakifonenijeji.pdfIn PDF document text
    • http://dancephoto.ru/userfiles/files/wovajafegutobaka.pdfIn PDF document text
    • http://mudrkanuch.sk/editor_uploads/system/files/49577002845.pdfIn PDF document text
    • https://turbooto.vn/upload/files/53066142470.pdfIn PDF document text
    • https://gegeny.hu/uploads/file/55399265989.pdfIn PDF document text
    • https://glozor.com/userfiles/file/84410273927.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16133460fb48ba---4354102252.pdfIn PDF document text
    • http://vitccorp.com/uploads/userfiles/file/mefofevevisilasa.pdfIn PDF document text
    • http://annabarons.lv/files/files/nigufuzanevojupexawisux.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud/files/wobitotewexuponodozaninod.pdfIn PDF document text
    • http://bhavalaya.org/ckfinder/userfiles/files/15701791678.pdfIn PDF document text
    • http://www.gieskestukadoors.nl/ckfinder/files/files/tuboxazakipo.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/60041174771.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=snapseed+apk+new+version+downloadPDF link annotation