Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9998674104c845c…

MALICIOUS

PDF

57.0 KB Created: 2020-09-14 03:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ea4e0aec58cd5704d2bd8d3abdf1a6d SHA-1: 6d054564c78d8aede13d7d94428fcd772ba57084 SHA-256: c9998674104c845c3b665601ddc6835709cb0e50ab95321d6bf431ff17aba980
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged as malicious due to a high number of embedded links, many pointing to external PDF files, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure. While no scripts were extracted, the sheer volume of links and the ML classification strongly indicate malicious intent, likely to lead users to harmful content or exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/wix?keyword=anglo+saxon+villages+in+lincolnshire In PDF document text
    • http://files.cads-tt.com/uploads/1/3/0/9/130969965/2f712.pdfIn PDF document text
    • http://xuvopifa.thehockeyprofessor.org/uploads/1/3/0/8/130874426/lijulamuzo_dakow.pdfIn PDF document text
    • http://files.transworldgeneralcommerce.com/uploads/1/3/2/7/132710779/zugefememom.pdfIn PDF document text
    • http://rifaju.janettejadeslovingeden.com/uploads/1/3/1/4/131454237/dezebazunuvod_faxoziguxugotik_baxikomalapote.pdfIn PDF document text
    • http://files.betheluccspringgrove.com/uploads/1/3/0/8/130813973/1763275.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4825/6156/files/toliwutekivow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/dezasupabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/angular_material_simple_form_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/31377022733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4433/1680/files/3419702794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9689/9733/files/79396729657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/36908200247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/budget_2020_19_pakistan.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a467d2_e2d2c2e429c24ff18d59d40fb0afd4ce.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d0614adc855f4867a65f5f7e76bb8fdc.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D94 5176 bytes
SHA-256: 7645037c4054356ee1fcafaac56e2ff2db372b7f092c8c4ce883e2546cf44acb
font_01_sfnt_off0000af37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF37 12288 bytes
SHA-256: 95d6c90d00e095bdf86daaf8e7cc40d5e909a3fcbbc0cb399ed494cfbce550b6

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