Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec92c290207c308d…

MALICIOUS

PDF

39.4 KB Created: 2021-03-28 16:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79344cc6045c336301cc397d131c068e SHA-1: 8e3e26c3abd9ada0558539cf68e8587e99998908 SHA-256: ec92c290207c308d6f83c11f5e286b7423691c1ef50d83641f5492e9dc37cad3
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 trick users into clicking an embedded link. The document contains a large number of external links, many pointing to PDF files hosted on services like Weebly and CDN, suggesting a link farm intended to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8398

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 39 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://jottigo.ru/award?keyword=classification+of+anopheles+mosquito+pdf
    • https://jopuxokoxi.weebly.com/uploads/1/3/4/3/134350500/loridaxu.pdf
    • http://fedexonep.mypressonline.com/l_adjectif_qualificatif_pithte_et_attribut_exercices_corrigs.pdf
    • https://zawasofolebu.weebly.com/uploads/1/3/4/9/134902788/sejidedojagil.pdf
    • https://cdn.sqhk.co/tefulobesa/Jgh9giO/56920922837.pdf
    • https://cdn.sqhk.co/somepizeko/jiiigiL/sedifedu.pdf
    • https://budemarapi.weebly.com/uploads/1/3/1/3/131381681/78a025b13ebd4c.pdf
    • https://ruwijupoxotafan.weebly.com/uploads/1/3/0/8/130814308/490133308250.pdf
    • https://cdn.sqhk.co/duzimisese/hGZ4hcA/pofarefububexuz.pdf
    • http://lumogodasekepi.mypressonline.com/juramopeba.pdf
    • https://cdn.sqhk.co/sojowidaz/hgwxhe4/wemovirobawisikotusosibun.pdf
    • http://robugipunebib.mygamesonline.org/45423087347.pdf
    • http://naxajogilelog.medianewsonline.com/watojow.pdf
    • https://cdn.sqhk.co/zapimafe/iRkKhjv/34563261551.pdf
    • https://cdn.sqhk.co/wibetaxor/jgfjdXE/godotatanojurenoru.pdf
    • https://cdn.sqhk.co/kugefiruxat/hcvjhhg/20482901533.pdf
    • https://cdn.sqhk.co/tezizejaropu/gOii2hb/vive_sync_avatar_creator.pdf
    • https://jiwanozote.weebly.com/uploads/1/3/4/3/134354006/d66579d665.pdf
    • https://cdn.sqhk.co/rowubuvuke/hiiw4ia/21027655891.pdf
    • http://bifovigavij.myartsonline.com/the_power_of_a_praying_wife_book_of_prayers.pdf

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