Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c9b80de89d79b70…

MALICIOUS

PDF

97.1 KB Created: 2021-02-26 18:50:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 971525729146f14f78cb4c9012c3e262 SHA-1: 3575f446e445ccdc095a3332b78a02679b90391c SHA-256: 5c9b80de89d79b70ec1df695a4a7a47b6f7fed511043f60c97cf220cabd039b2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and is flagged as a link farm on disposable hosting, suggesting it's designed to redirect users to potentially harmful sites. The presence of embedded URLs and the PDF structure further support its role as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9005

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/award?keyword=aqua+logic+flooring+reviews PDF link annotation
    • https://cdn.sqhk.co/wajuletixex/cheJgj6/bucketlist_bombshells_forbes.pdfIn PDF document text
    • http://topcreditcheck.info/66696000724ttdum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393346/normal_6009e68515a3a.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.site/dupujujorizulegaja0rh20.pdfIn PDF document text
    • http://gewebud.22web.org/menu_buffalo_wild_wings.pdfIn PDF document text
    • https://cdn.sqhk.co/dutedape/Vajcrhc/adderall_doses_for_adults.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386829/normal_601e5d672d9bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459027/normal_6007bcee50b37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421352/normal_600e9e4a68f4a.pdfIn PDF document text
    • http://xoxiposewarewa.epizy.com/lepebepizotoz.pdfIn PDF document text
    • http://nutogexutal.rf.gd/xivibivorowakerozobanaku.pdfIn PDF document text
    • http://topajikof.epizy.com/game_captain_tsubasa_ps2_pc.pdfIn PDF document text
    • http://mulazukaga.rf.gd/steelers_news_report_today.pdfIn PDF document text
    • http://wotisonuli.epizy.com/international_stock_market_news_today.pdfIn PDF document text
    • http://jazupizewatabal.epizy.com/how_much_does_it_cost_to_replace_ceiling_joists.pdfIn PDF document text
    • http://kufivafatufit.epizy.com/sibubet.pdfIn PDF document text

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