Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c3b9fee8aeb9bb8…

MALICIOUS

PDF

77.0 KB Created: 2021-01-06 17:28:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-07-02
MD5: 35b4b8c0fc84514943b947763f359bb4 SHA-1: e46d0acb6b2d8d157b169733df498c10ced388c8 SHA-256: 0c3b9fee8aeb9bb811038429d22fb5be76df5ff0a3be095909909dd49f324c80
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafftec.ru/123?utm_term=what+is+underneath+the+vatican PDF link annotation
    • https://wegebumerovoni.weebly.com/uploads/1/3/5/3/135387929/5434334.pdfIn PDF document text
    • https://cdn.sqhk.co/mokavokaven/10ajgjc/free_robux_without_downloading_apps_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/XCRhfib/free_kick_goalkeeper_game.pdfIn PDF document text
    • https://kinijanara.weebly.com/uploads/1/3/4/5/134585029/gexeden.pdfIn PDF document text
    • https://cdn.sqhk.co/vumivatuvi/ieicC4K/39622444485.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/3471586ae14859.pdfIn PDF document text
    • https://jesabison.weebly.com/uploads/1/3/4/3/134379325/8871619.pdfIn PDF document text
    • https://zorajifedimak.weebly.com/uploads/1/3/1/4/131437130/2629873.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/tetenifeme/xivofumarosirifa.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/pajubogoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1db6251d-dcdf-4c07-b688-c13941747749/54069157573.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/du_b._ed_entrance_syllabus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dbc6cb3-e0b9-4785-aa86-85364799dbe8/one_deck_dungeon_2_player_campaign.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/singh_is_king_movie_songs_ming.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/8297691948.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_off0000ee4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4B 5068 bytes
SHA-256: 484a61ebd8944f5328632e4f9cce0e51febd706a2d1ba988b33f52cc203f6d79
font_01_sfnt_off0000ff91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF91 11624 bytes
SHA-256: e5d3593ebf6d811a510986f5c5ebc1db52386b8657b665074e6dd90d07713c08