Malicious PDF — malware analysis report

Static analysis result for SHA-256 693b4fbb18680fb9…

MALICIOUS

PDF

73.4 KB Created: 2020-12-28 10:56:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 9791949e60bb6fd3b49db020569f5081 SHA-1: 0c75d31ecf88452208c2750cf28d61e0cc207b95 SHA-256: 693b4fbb18680fb9421a97ee559f8d1c49e356b0e2b80bf24322b2af45934207
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://traffset.ru/shook?utm_term=train+sim+world+2020+ps4+review PDF link annotation
    • https://cdn.sqhk.co/zexukobesu/kDyghih/xeximokigufapuvosot.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/jgDP86H/34450601444.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/bjciPhi/septic_tanks_in_algona_iowa.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/PQkgcwK/super_dancer_3_contestants_name_and_age.pdfIn PDF document text
    • https://batarodev.weebly.com/uploads/1/3/1/3/131380453/8762691.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384642/normal_5f94b3be5afdc.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/MtdgcuH/the_room_place_locations.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482002/normal_5fcad71ceab4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530846/normal_5fb7b826457cd.pdfIn PDF document text
    • https://cdn.sqhk.co/nukuzulu/cggPhe7/best_mudding_tires_atv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c189c975-803b-4b05-8295-fc35e976330f/pepega_megaphone_clout.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d1f4641-b909-4ff1-8551-0c8bfdd576db/filet_mignon_cooking_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/186ccc42-c59a-4e51-a3d8-7e0002f19e1a/rovemilukawogerudab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6e5e1a2-5cd3-4a23-945d-2b1adbae6a23/run_steam_vr_games_without_steam_vr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/627019e5-1749-4f7a-8c28-127ecc69a0d7/48638933122.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_off0000e15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15F 5568 bytes
SHA-256: 000eff9a95af8d5b2d2a0c43e75864b619c86a8ec64cb38a1b8108b3910c3952
font_01_sfnt_off0000f44c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF44C 10840 bytes
SHA-256: 8510df8322816cd7c7bdee244f575065371be3b9c4ca468755df9a0f8783bd7e

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