Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0971c5369cdd28…

MALICIOUS

PDF

66.2 KB Created: 2021-02-12 09:38:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: af75b22879fced270cb223f7f96a1030 SHA-1: 3c8f677b5016d966bd78c5b0d1fa2a8d83e1b29f SHA-256: 6b0971c5369cdd28b36de2a905ef77ed39b86efba379fee51d6f31646c62a5ff
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://leonvi.ru/wix?keyword=pps+calendar+19-20 PDF link annotation
    • https://cdn.sqhk.co/wujukipako/YyxjdIb/cfo_role.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500669/normal_5ffdb60ec5356.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391303/normal_5feea385aee9c.pdfIn PDF document text
    • https://cdn.sqhk.co/sepunaro/jrhfaWo/teacher_application_lesson_plans_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443598/normal_6025c478ad5f3.pdfIn PDF document text
    • https://cdn.sqhk.co/kipezipilojo/KhiIjha/87196765502.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411921/normal_5ffdee4f53471.pdfIn PDF document text
    • https://cdn.sqhk.co/zonurubo/WW9MieI/popular_hashtags_for_instagram_musicians.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/gghvz2A/52258410636.pdfIn PDF document text
    • https://cdn.sqhk.co/gegojagakexu/a3iiVig/800_words_season_3_episode_11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408596/normal_60231b6821368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410989/normal_5fd868390e1a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384460/normal_5fcea5f6786bd.pdfIn PDF document text
    • http://gufutaca6.xyz/44112167934k3hkt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E5 5584 bytes
SHA-256: 91bb3709f0cdf561402df82ddee4a206a847bac61e8f6c6016e816c8db6b08ce
font_01_sfnt_off0000d9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F1 10228 bytes
SHA-256: cfc1790ea65d91b8070065692565c54fd3739ac68405cbc8ac3c265bb0fc8889