Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3efa83381a1cf72…

MALICIOUS

PDF

73.0 KB Created: 2020-12-27 00:41:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 7feae9bac5474f4c6e86a1c1e8f360b6 SHA-1: f705fe4f5bb381cec43ac3440a66c4e25e1d63b4 SHA-256: d3efa83381a1cf72a4f1f0cc46ac025da63344185f0b13aebff594305a72ff10
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://trafficel.ru/wb?keyword=zmrk%20stock%20prediction PDF link annotation
    • https://joxorarosod.weebly.com/uploads/1/3/3/9/133999743/towogi.pdfIn PDF document text
    • https://sexegunu.weebly.com/uploads/1/3/3/9/133997610/papuxezijaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404122/normal_5fcf3f13581ed.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/9244072.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/nilititonawafim/dovudaxadatal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1017c3e-72eb-45b8-98ba-a116c11786d4/56954961695.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e8c87f-84c8-490c-b1be-142c00320da0/fubilasidagidibopo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0b18c0a-7c46-4a87-8231-1764f913b4ad/xbox_360_mic_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/961557c7-a93c-47c5-bbba-cb21f5a6d293/sesitape.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/42630396503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59797c10-f755-49ef-b192-cb1fab99b713/53509641601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28dc0aec-270f-455e-b09e-edacfd24c11b/dragon_ball_z_theme_song_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/hey_jude_piano_cover_sheet_music.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_off0000e044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE044 4996 bytes
SHA-256: 28418b7272cb9e2923fe2a082a993bc9a1b7bcb9cd43fd108d911265215f921f
font_01_sfnt_off0000f137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF137 11204 bytes
SHA-256: 25be9ae730a6ba48a5471c835967f2a9165185725bc467521eef7d0a3bc31044