Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f1fdd9612295102…

MALICIOUS

PDF

72.3 KB Created: 2021-02-10 03:53:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 733eda67ea03508f9cfaecff0dd56b44 SHA-1: 9428a340cee7ae154d746d03ce00f61281fb3940 SHA-256: 2f1fdd9612295102656422725641d00ce30bf479d4d877d779e4c8947675a675
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://bologen.ru/aws?utm_term=sensory+play+benefits+pdf PDF link annotation
    • https://cdn.sqhk.co/feguzuvubut/eAiaWgg/mcat_score_percentiles_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xagegegozi/hrhaha8/nopijojuni.pdfIn PDF document text
    • https://cdn.sqhk.co/movumatoz/9ibhdLN/pobew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409411/normal_5ff5ef1dd6b5a.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/gjs7aje/zidevazod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366033/normal_5fc900e5c3bd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470542/normal_5fc79b83a0b36.pdfIn PDF document text
    • https://zunenevalomedo.weebly.com/uploads/1/3/4/8/134855990/bibefizizozarovunofi.pdfIn PDF document text
    • https://galujamisone.weebly.com/uploads/1/3/1/8/131871568/30644.pdfIn PDF document text
    • https://lupawepenotude.weebly.com/uploads/1/3/1/6/131606523/bezujebavabar_xegowi_serigigotaso.pdfIn PDF document text
    • https://cdn.sqhk.co/gukugifixija/BiaggE2/kudukakekabe.pdfIn PDF document text
    • https://cdn.sqhk.co/fixiwuwukufi/ZihjbWy/love_tester_game_app.pdfIn PDF document text
    • https://cdn.sqhk.co/nabixisaf/Wjjhigi/divaxipisokiripotosikix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496584/normal_5fc5e53070b14.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/gifiz/23750653023.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/pejaluru.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/96422415519.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/xirijakono.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_off0000dfee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEE 5380 bytes
SHA-256: 565a7e56817203fafc7ca79c62fe4f6efd2643761f0029d80af8fc8e11fb0e10
font_01_sfnt_off0000f240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF240 9992 bytes
SHA-256: 378ea74931e6a7f58d7b0f907e4b052222f3743d5ac63159f7278652f9ce0400

Open this report in the interactive analyzer, or submit your own file for analysis.