Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ca22f92b206d17…

MALICIOUS

PDF

73.4 KB Created: 2021-02-11 03:50:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 347f2bf80f6b4f1fc06826194c7865a5 SHA-1: 93b6cbf978a899066ea16b44911faf093e30ba8d SHA-256: 92ca22f92b206d1749f622cf3e70f2c49a7088396084ff85e268745a5242bc60
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://seumenha.ru/wb?keyword=at%20kulve%20taroth%20guide%20reddit PDF link annotation
    • https://xefanopebowemid.weebly.com/uploads/1/3/2/6/132681782/2766042.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/ehgSzia/hero_evolution_guardian_tales.pdfIn PDF document text
    • https://cdn.sqhk.co/fosojatesog/jXhbohg/birthday_cake_theme_for_baby_boy.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/ygfGChf/advertising_jobs_near_me_entry_level.pdfIn PDF document text
    • https://cdn.sqhk.co/zolaxadivowe/SEra8Bl/godaddy_view_login_history.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/2042021.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/4ggjegh/survivalcraft_vs_block_story_vs_minecraft.pdfIn PDF document text
    • https://cdn.sqhk.co/divojimo/18hjLGc/winter_wars_roller_hockey.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/dixaleko/ifc_ehs_guidelines_for_mining.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/bekupefowosojorogukat.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/allu_arjun_videos_sharechat.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/pasugoratutuvop.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/libreoffice_spreadsheet_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/utorrent_free_for_windows_7_cnet.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/julewevulujofenebe.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_off0000e1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1CA 5024 bytes
SHA-256: ebf87b901465cf2233875afe50cd15acfed02e7539270a85a6af46c0a65ca3ef
font_01_sfnt_off0000f2e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E1 11076 bytes
SHA-256: 305ad77169d400171ee9ad3def461243920c20b40e83164b4ed1c78e7c4bdc92