Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fcb9b6e43fddd4b…

MALICIOUS

PDF

55.3 KB Created: 2021-09-09 08:12:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 44c7d07e04c6f518a3891d5e6beb8bd8 SHA-1: ca71f415a91abcf0d7dbebd2011b0dd1c2c63518 SHA-256: 1fcb9b6e43fddd4bdaf691a96e5e9cb7c00767eb90bfaeeb67c6203657084707
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://chcial.ru/uplcv?utm_term=chal+mera+putt+full+movie+part+2+download
    • https://dazhonghua1688.com/ckfinder/userfiles/files/75455516857.pdf
    • http://indyztyle.com/ckfinder/userfiles/files/77718014031.pdf
    • http://synphabase.ch/upload/file/71906195965.pdf
    • http://thepokewave.com/uploads/files/vufelusemawexepowu.pdf
    • http://re-media.ru/foto/ck/files/59348019161.pdf
    • http://arcomproltd.com/userfiles/file/zogivujomaw.pdf
    • http://frankifoto.com/uploads/pages/files/kixigimoxamu.pdf
    • http://startent.ru/SITE/files/editor/file/kifavadafez.pdf
    • https://kolegium.inaheart.org/upload/files/44714606799.pdf
    • http://www.heatandgas.com/EditorImages/file/zebatedomafuf.pdf
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135a474ae7b8---ziviwanegimori.pdf
    • http://ytlcases.com/userfiles/file/33674571376.pdf
    • https://abrasco.org.br/ckfinder/userfiles/files/lutubagovapololud.pdf
    • http://clinicaveterinariabilancino.it/userfiles/files/demamakefabubajubazil.pdf
    • http://feach.ie/images/uploads/file/58520015626.pdf
    • http://pokebarslo.com/uploads/files/87646495237.pdf
    • http://gabinetpro.gabinetpro.pl/kosmetyczka/krakow/files/pezulax.pdf
    • http://divapharma.com/uploaded/file/nimuv.pdf
    • https://eliteswimmingpoolsinc.com/wp-content/plugins/super-forms/uploads/php/files/ggdti5mt04qusn7pkm1vc0i5u3/bodifoparupofi.pdf
    • http://eastcity.hu/ufiles/file/43439372821.pdf
    • https://goldfieldssanddrags.com.au/ckfinder/userfiles/files/22073672432.pdf
    • http://hongdacable.com/d/files/71580281371.pdf
    • https://sanvexe.vn/webroot/img/files/83440575561.pdf
    • https://fiberglasssupplydepot.com/userfiles/files/mukefopevefobuze.pdf

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