Malicious PDF — malware analysis report

Static analysis result for SHA-256 0912eaaab685b204…

MALICIOUS

PDF

57.3 KB Created: 2021-02-19 12:22:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5356ebe9b8b3d8ed76165ad4042cbd0b SHA-1: 9e88ec92b7123fe4065892423baf674130cee9c4 SHA-256: 0912eaaab685b204a4dcefcdfd96219c10a95a21b3ce78c3a1416e045af75306
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as a phishing lure due to its small size and image-heavy content, typical of a screenshot designed to hide an actionable link. Multiple external URLs are embedded, with the primary one being https://druttle.ru/strik?utm_term=what+is+business+skills+pdf, suggesting a redirection to a malicious site. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8343

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 57 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://druttle.ru/strik?utm_term=what+is+business+skills+pdf
    • https://cdn.sqhk.co/fuxiwimemo/jjBgjie/jepuselenogevepez.pdf
    • https://cdn.sqhk.co/vujagefamig/gige9gC/ipl_live_cricket_match_apk.pdf
    • https://cdn.sqhk.co/bulixanejad/djgichj/picture_collage_maker_for_mac_free_download.pdf
    • https://cdn.sqhk.co/tireronerogo/byghjdX/95388218991.pdf
    • https://cdn.sqhk.co/buwuvibija/ih6mk6q/4197346917.pdf
    • https://cdn.sqhk.co/ragojagef/ocenUid/rank_smelling_diarrhea.pdf
    • https://cdn.sqhk.co/pabelewexo/cnF20jc/chat_translator_for_whatsapp_mod_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4452599/normal_5feb096365e83.pdf
    • https://zatiwakap.weebly.com/uploads/1/3/1/8/131871625/be8908ef8.pdf
    • http://xusasun.rf.gd/best_linen_sheets_canada.pdf
    • https://s3.amazonaws.com/wutezigojuxi/national_geographic_world_english_1.pdf
    • https://s3.amazonaws.com/lezerawe/brigandine_ps1_guide.pdf

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