Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e1f476cf16456f…

MALICIOUS

PDF

38.6 KB Created: 2021-09-02 20:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: af4eca774785966e3584811734b0ad3f SHA-1: b4c676263a166bb7b11ddaaab30ab7ae3a45aa93 SHA-256: e2e1f476cf16456fc7c9bdc6dba72a49ce86cba41c219c2b27f5699aaafa6dec
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating it's designed to redirect users to malicious sites. The heuristic 'PDF_IMAGE_LURE' suggests it uses a screenshot to hide clickable elements, a common phishing tactic. The embedded JavaScript likely facilitates the redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8504

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 38 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://medvor.ru/uplcv?utm_term=english+for+everyone+level+4+advanced+course+book+pdf PDF link annotation
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c68a44bf787---75007191942.pdfIn PDF document text
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rogijepiwufinemowetekidex.pdfIn PDF document text
    • https://hyosung-gulf.com/uploads/file/56626547470.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/60608477056.pdfIn PDF document text
    • http://business-baltic.com/myfiles/dok/32631560822.pdfIn PDF document text
    • https://cakenepal.com/userfiles/file/rogafamirujar.pdfIn PDF document text
    • https://cremyco.com/app/webroot/docs/file/zemuzokorudakepasigew.pdfIn PDF document text
    • https://nakipoglugroup.com/upload/ckfinder/files/gebasijuledesuviwejuki.pdfIn PDF document text
    • https://atlaskvartir.ua/data/uploads/files/8443392877.pdfIn PDF document text
    • http://www.chatanakonci.cz/userfiles/file/6577943892.pdfIn PDF document text
    • http://scuderia512.com/js/upload/files/69501349819.pdfIn PDF document text
    • http://apexnepaltravel.com/userfiles/file/putakasoxuvewupivojifuxem.pdfIn PDF document text
    • https://aravlicraft.com/cmsCart//upload/file/40364908207.pdfIn PDF document text
    • http://debschoen.com/userfiles/file/bofabivuwikemesewitub.pdfIn PDF document text

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