Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4933ffd84169660…

MALICIOUS

PDF

45.6 KB Created: 2021-09-25 09:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 98177153404bb6314cb2035dc55287c4 SHA-1: 549f2ff44ae745fa19eaf8fcb1cc0e9b3a7c28b9 SHA-256: b4933ffd8416966071a4b69414bd3fdb68de1beabbcb322d4966ee80f00b42e2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. ClamAV detection and ML classification further support its malicious nature. The embedded URLs suggest an attempt to redirect the user to malicious content, likely a phishing page or a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7433

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 http://luisacortesearchitetto.it/userfiles/files/58108338025.pdf
    • https://avenue102.com/uploads/file/52056210617.pdf
    • https://tttinox.com/upload/userfiles/files/fafakemujidix.pdf
    • http://willbramephotography.com/33208503765.pdf
    • http://boldogelet.hu/media/93269371687.pdf
    • http://flygarfield.net/userfiles/file/bowafekejenejevovemuzu.pdf
    • https://gullyracing.it/admin/ckfinder/userfiles/files/5930171621.pdf
    • http://www.juniorcollege.cl/ckfinder/userfiles/files/sikakemimijutudobesa.pdf
    • http://heydarbaba.org/resimler/files/72260488474.pdf
    • https://labelmarket.pl/data/file/91030056199.pdf
    • http://brava-ekb.ru/userfiles/file/73582561402.pdf
    • https://taptigrihnirman.com/singhania/downloads/file/4461249282.pdf
    • https://consultemergingmarkets.cubsindia.com/files/bagimilinetute.pdf
    • http://dreesmann-foto.de/userfiles/file/nininuxikigasitakaxefizi.pdf
    • http://jgbt.us/pds/userfiles/files/tokegilesiginarimuz.pdf
    • https://tbsva.org/Upload/files/20210924210748.pdf
    • http://bandenplaats.nl/cmsimages/file/88029934097.pdf
    • http://frankifoto.com/uploads/pages/files/lewebalemuri.pdf
    • http://bcslaw.hu/admin/fck_upload/file/luvobexafow.pdf
    • http://akvatoria.by/UserFiles/files/18994991320.pdf
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1613fc68d638de---waxamadoloximezojisugow.pdf
    • http://bordahusfeldolgozo.hu/editor_up/69953222686.pdf
    • http://ruihuitax.com/files/file/mekegunibeju.pdf
    • http://lumieye.com/userData/ebizro_board/file/juxitapitamupafawejolabap.pdf
    • https://superchills.com/userfiles/file/62667661162.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=chicago+med+watch+online

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