Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db525223621e8ce…

MALICIOUS

PDF

61.0 KB Created: 2021-02-26 22:51:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 51b9fab18559ae0723212441bc4d1998 SHA-1: fd0f53b0de7300e6c7396839e6ab912e4d153720 SHA-256: 9db525223621e8cec0a1b45ccd360eb66f7f132865f6200542a05c33cdceeb44
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. It contains a link farm with numerous external URLs hosted on disposable domains, suggesting a phishing or SEO spam campaign. The presence of external URIs and the overall structure indicate an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8850

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://xajibur.ru/award?keyword=toro+personal+pace+lawn+mower+hard+to+start PDF link annotation
    • https://tulofezufiruz.weebly.com/uploads/1/3/1/4/131409090/d0f3d3d.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/kogedigosekazolojupebot.pdfIn PDF document text
    • https://bukudemedu.weebly.com/uploads/1/3/1/4/131483547/budolaxamad.pdfIn PDF document text
    • https://gunulavosaki.weebly.com/uploads/1/3/4/3/134374607/subonumap.pdfIn PDF document text
    • https://kunaxujo.weebly.com/uploads/1/3/1/4/131406864/muzevipo_lokuso_razakirowil_xodotaturi.pdfIn PDF document text
    • https://cdn.sqhk.co/fetedudi/iqMJ8ii/tikuzugukozifadewuvuk.pdfIn PDF document text
    • https://cdn.sqhk.co/kokowoxiwi/R5gvUYy/51435671109.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/VNHsgiS/pilot_flying_j_stock_ticker.pdfIn PDF document text
    • https://cdn.sqhk.co/sarafogu/XEGrgfx/53485268962.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/gjyhhVL/help_steps_apk_indirme.pdfIn PDF document text
    • http://nasufulorejuwe.mywebcommunity.org/maus_volume_1.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvapolaxaj/gqrhfih/57189669670.pdfIn PDF document text
    • https://cdn.sqhk.co/refevebux/PjbCihj/free_bingo_blitz_app.pdfIn PDF document text
    • https://cdn.sqhk.co/dokijesu/jOVdigf/piborukiselawer.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/analysis_for_office_launcher.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/react_native_navigation_example_android.pdfIn PDF document text

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