Malicious PDF — malware analysis report

Static analysis result for SHA-256 08df8bf5e08902d5…

MALICIOUS

PDF

88.4 KB Created: 2021-02-28 11:48:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 38c0fb73aa726109f2e3d5c5ef4541fc SHA-1: 3d1d139a1dfb9c2f21c106e396456429a6c005fa SHA-256: 08df8bf5e08902d519a5723ef0a436ba56a98211c6dbe3100560e9ba2bfc79bd
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many pointing to SEO-optimized domains, suggesting a link farm or redirector strategy. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. The embedded URLs, such as 'https://seumenha.ru/award?keyword=the+power+of+now+author+eckhart+crossword', are designed to appear legitimate but lead to potentially harmful content.

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://seumenha.ru/award?keyword=the+power+of+now+author+eckhart+crossword PDF link annotation
    • https://cdn.sqhk.co/fejukomus/B1WDtge/fowexamifajotudigukibeti.pdfIn PDF document text
    • https://cdn.sqhk.co/surikuzezun/Ls1gj8W/cricket_live_match_2020_ipl.pdfIn PDF document text
    • https://cdn.sqhk.co/befozaxulot/gfjg0s7/slimming_color_block_dress_blue.pdfIn PDF document text
    • https://cdn.sqhk.co/ropimipaf/Picifhb/card_match_tool_points_guy.pdfIn PDF document text
    • http://kazexajisodibu.medianewsonline.com/zuxanutujo.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/terazolubixawunokixozifo.pdfIn PDF document text
    • https://cdn.sqhk.co/xawefigi/PARgiim/kirerofetapixawunoj.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/GjiijdK/rocket_music_player_app_download.pdfIn PDF document text
    • https://rikelakejif.weebly.com/uploads/1/3/4/8/134885243/bf52b64b6f9303.pdfIn PDF document text
    • http://gejudoxe.mypressonline.com/honda_vision_nsc_110_service_manual.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/lolaritemukole/archaeology_anthropology_and_interstellar_communication.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/33688667396.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/pugeko.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/tazanasesejusutapewaboru.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/4385064193.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_off00011e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E66 5316 bytes
SHA-256: 100a48b77ab0e1278c93a818e816e45d7ee779399beedf4beb650439282a7a21
font_01_sfnt_off00013080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13080 10440 bytes
SHA-256: bce91ec7ef59d93a37397efbad4795ec81798f50735c41c2ef3675f0fc94eefe

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