Malicious PDF — malware analysis report

Static analysis result for SHA-256 a72fedb2034f329c…

MALICIOUS

PDF

39.0 KB Created: 2021-09-12 16:52:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 42f97f3f8253d5e1c709dc9e9e4c812a SHA-1: 0532ee1b03b0d20ef8bac18f6c10e6142fe507b6 SHA-256: a72fedb2034f329c6ba1216c56c9f33b9b4e1d544ff9d795e5a8bb8fd073f0df
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF is identified as an image-only lure, a common tactic for phishing or malware delivery. It contains numerous links pointing to potentially compromised websites, suggesting an attempt to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8684

Heuristics 6

  • 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 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.accessibilite-salle-eau.com/ckfinder/userfiles/files/gakaduvuzomufofuputefux.pdf In PDF document text
    • http://retailcop.ca/files/repetolofoketuz.pdfIn PDF document text
    • http://jowinbio.com/upload/files/202109042043109677.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/6ngrjaau5mf1q8sq4obg1oovkt/vuriwukewabelefebubumole.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613111f33140c---86430224667.pdfIn PDF document text
    • http://mimarkamilozkartal.com/userfiles/files/tizagaterenipajadumis.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/161301f4c24388---19929740800.pdfIn PDF document text
    • https://ijmscr.com/ckfinder/userfiles/files/xowane.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613757fa7c970---31227294779.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/3bf2dfd54a048c972e01a01f6207dd26/65241886485.pdfIn PDF document text
    • http://raffaelecavazzoni.com/userfiles/files/mewatupuzakadifex.pdfIn PDF document text
    • http://orthocarecentroortopedico.it/userfiles/files/54816685970.pdfIn PDF document text
    • http://mmsmarin.com/imgimage/file/5552000310.pdfIn PDF document text
    • https://termofriz.rs/files/medixi.pdfIn PDF document text
    • http://espaciocultivarte.com/ckfinder/userfiles/files/dijelake.pdfIn PDF document text
    • https://makiriaszto.hu/ckfinder/userfiles/files/82692892036.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=download+game+dream+league+soccer+2019PDF link annotation

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