Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eaad2990d1e6bda…

MALICIOUS

PDF

68.7 KB Created: 2021-01-12 15:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 83c0a0ba50e2a3f2132c55fb57c33f8d SHA-1: 71d517f31bbb127178197aa2d12164a5407bf803 SHA-256: 5eaad2990d1e6bda225f2c1d5673bceb98fcaed10f8889aa014ee33cbb96e077
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file exhibits characteristics of a phishing lure, employing SEO link farming techniques to distribute malicious content. The presence of multiple external links, including a redirector URL, suggests an attempt to direct users to potentially harmful websites. The ClamAV detection and ML classifier further indicate malicious intent, likely related to exploiting PDF vulnerabilities or delivering further payloads.

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://trafffi.ru/123?utm_term=the+guild+of+automotive+restorers+complaints PDF link annotation
    • https://cdn.sqhk.co/puvubuzu/brjbicf/89674682242.pdfIn PDF document text
    • https://cdn.sqhk.co/puburikob/gjmiajF/zokifo.pdfIn PDF document text
    • https://cdn.sqhk.co/dorusafe/atnjhhg/78780889060.pdfIn PDF document text
    • https://site-1172884.mozfiles.com/files/1172884/puzzle_bobble_mame_rom.pdfIn PDF document text
    • https://site-1180277.mozfiles.com/files/1180277/ba_exam_date_sheet_2019_bzu.pdfIn PDF document text
    • https://cdn.sqhk.co/zexoribuj/iihjhgv/allo_allo_season_1_episode_3.pdfIn PDF document text
    • https://site-1173589.mozfiles.com/files/1173589/woodworkers_hardware_sauk_rapids_mn.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8c3f11ed.pdfIn PDF document text
    • https://site-1168368.mozfiles.com/files/1168368/23022910764.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/sevoga/fosulexukapoj.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/nirinivopawasokipir.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/good_incremental_games_android.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_off0000ce05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE05 5580 bytes
SHA-256: a220e92a8465aca9b3523f90da75fe9826b9b0495197702b1a3e16b6f9ca12ee
font_01_sfnt_off0000e0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E1 10876 bytes
SHA-256: f1c5d0510c14f114c5d64b6d78126a3fcab5e34c9a6fadce58254a5624e469e5

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