Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bdf762784711989…

MALICIOUS

PDF

109.1 KB Created: 2021-02-24 20:49:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 01755a9cce87d822c1d025d654549be9 SHA-1: d6cbc71c1d84fb78888e899709c6328942503e71 SHA-256: 0bdf7627847119890d0e3448ec5a940efc4be6a7f1f4e168fd40c93db9a7e283
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by multiple heuristics and an ML classifier, specifically flagging it as a link farm. It contains numerous external links, many hosted on disposable domains, suggesting an attempt to redirect users to potentially harmful content or for SEO manipulation. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely to facilitate further compromise or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9702

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://baarspo.ru/award?keyword=what+is+religious+toleration+definition PDF link annotation
    • https://cdn.sqhk.co/zolotazerimo/AgjQjde/modern_warfare_update_ps4_not_enough_space.pdfIn PDF document text
    • https://cdn.sqhk.co/zajujinul/hejbokr/dynamixel_xl-_320_arduino_library.pdfIn PDF document text
    • https://cdn.sqhk.co/numorolele/ejiicia/44823280464.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/6jeYieT/lyrical_photo_video_maker_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sebuwemid/ib4Vgfy/jibunako.pdfIn PDF document text
    • http://vadonodip.22web.org/guzopusisugasulus.pdfIn PDF document text
    • https://saboruxeketeg.weebly.com/uploads/1/3/4/8/134850947/7833521.pdfIn PDF document text
    • https://cdn.sqhk.co/tumozaraf/jiOEjfL/mizotapabo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386834/normal_600106c187e48.pdfIn PDF document text
    • https://juxusuvib.weebly.com/uploads/1/3/0/7/130739690/joboninususunomeso.pdfIn PDF document text
    • http://xujilutobidiko.iblogger.org/cbse_10th_marksheet_online_verification.pdfIn PDF document text
    • https://cdn.sqhk.co/xeloxilava/zE9hgpq/nadifazafegisozuwikaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402519/normal_6021158e98cb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444377/normal_6007267985e25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426071/normal_5fcee2510ddb6.pdfIn PDF document text
    • https://cdn.sqhk.co/wodigajamu/qbEK0gd/bird_racing_simulator_eagle_race_games.pdfIn PDF document text
    • http://mulizin.epizy.com/a5_flyer_template_indesign.pdfIn PDF document text

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