Malicious PDF — malware analysis report

Static analysis result for SHA-256 2838489bc1e8e694…

MALICIOUS

PDF

71.8 KB Created: 2021-02-26 15:49:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5edb879206962402afe9888232c0c215 SHA-1: f2af435bf26874a1d39450e279b64b8ae2323925 SHA-256: 2838489bc1e8e694b84e397c56fafc9fc04b2c694a0125da7e5c5d207e2a27af
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://ponafet.ru/award?keyword=city+of+fallen+angels+book+about+venice PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416934/normal_602d3d73e3cd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460950/normal_5fd934c0ec502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466659/normal_601b32385b9b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393889/normal_5fced8046ebb3.pdfIn PDF document text
    • https://cdn.sqhk.co/dobexesi/hh6igjc/pinball_pete_s_greenville_sc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386335/normal_603854ed9cb47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5fe97fd1ad8ef.pdfIn PDF document text
    • https://cdn.sqhk.co/lasijutag/kiaGjab/11411200642.pdfIn PDF document text
    • https://cdn.sqhk.co/goxepijikun/Dhazagf/sinebekutanenuzabilale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387567/normal_600eca14318be.pdfIn PDF document text
    • https://cdn.sqhk.co/zutijujes/Yzgh7gd/face_and_voice_changer_video_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420431/normal_5fef442127f6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405186/normal_5feb6fcc7ea5c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/interest_groups_icivics_answers_the_potato_problem.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/wenegixalijiboxevebap.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDB5 5224 bytes
SHA-256: 659e3d3b233b7a63b6d48ebff6c94b54c15a6c009a99674236dcc0eed402da03
font_01_sfnt_off0000efac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAC 10016 bytes
SHA-256: 6f97fba7564168ea813b5f68bec71b447a80bcca77963ef29a421558f5449e7f