Malicious PDF — malware analysis report

Static analysis result for SHA-256 c29854b02f430cfa…

MALICIOUS

PDF

36.2 KB Created: 2020-08-05 09:28:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 72125993c26510192c60722986618dec SHA-1: cd174352b370cd1b0b2137d8cec5ca1ca21c69ca SHA-256: c29854b02f430cfa785a98613e3a8cbae91776ee6d1ad52e751484b08ef20ba6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external resources, a technique often used for SEO poisoning or to obscure malicious destinations. One critical heuristic identified a PDF link to a known malicious redirector at https://ttraff.ru/wb?keyword=guitar%20pdf%20free%20download. The document body, though heavily obfuscated, contains text related to 'guitar pdf free download', suggesting a lure to entice users to click the malicious link.

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.ru/wb?keyword=guitar%20pdf%20free%20download In PDF document text
    • http://files.svaptsa.org/uploads/1/3/0/8/130813934/9e0edab563edc4d.pdfIn PDF document text
    • http://files.icaisfo.org/uploads/1/3/1/4/131453124/mojofuv_kexina_xasaxaw.pdfIn PDF document text
    • http://files.kelownaplumbingsolutions.com/uploads/1/3/1/3/131398156/vudejinu-kedav-benosagulita.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/1/0428/3914/6662/files/99561152162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/liwunojifireluwolixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6702/2239/files/nenudeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/sitereber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rinajimakonewob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6531/0374/files/bilod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9562/9725/files/89135514328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5222/1091/files/pofamisaxulijarixowovazuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0780/1504/files/bsava_procedures_manual.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_off0000505e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x505E 4980 bytes
SHA-256: 0b5fa3f2d1b09f920d62cda1121a5c4b57eaa3076e544e8ddb24bba967eaa80e
font_01_sfnt_off00006177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6177 10248 bytes
SHA-256: af0291f4340fe59e9659e9b12b010ae42ff2d6b3445b3b3f7aa1ef0078bba036

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