Malicious PDF — malware analysis report

Static analysis result for SHA-256 971a364c80351831…

MALICIOUS

PDF

41.9 KB Created: 2020-08-02 16:19:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a688c0007994ddc755708640c1a0bf96 SHA-1: 98f10e8347490f7e27f7b8528cd1d7ebee24be93 SHA-256: 971a364c80351831c644d32f42c4e809a4fa171138b68f97f21e9576ced1fe26
194 Risk Score

Malware Insights

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

The PDF contains a malicious link disguised as a guide for deleting ARK mods, directing users to a known malicious redirector. The document also functions as a link farm, pointing to numerous other PDFs, likely for SEO poisoning or to distribute further malicious content. The ML classifier strongly indicated maliciousness.

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.com/pify?keyword=how+to+delete+ark+mods In PDF document text
    • http://files.stsrx.com/uploads/1/3/1/4/131410812/pedar_lavivudexuk.pdfIn PDF document text
    • http://files.crownlifeseminars.com/uploads/1/3/2/7/132710669/fizezad-ronux.pdfIn PDF document text
    • http://files.callaneventplanner.com/uploads/1/3/1/3/131397996/difezimid-fivijefav-waxituson-xireb.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/1/0428/3459/1907/files/zizatamubuzetopitom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5306/2046/files/11215159654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34292265756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2597/2904/files/68767332745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9172/9309/files/betadine_24_mg_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/jafabenalowanuwekumiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7909/0855/files/fujonurakuvoziwele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4995/7029/files/xemofiralinidifalijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8212/8291/files/77441178813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0875/3827/files/89662806758.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 7

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_off000067c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C1 5088 bytes
SHA-256: d36df7c00bf85434316000be5108e34697a831e9e79585520f7166781e58884e
font_01_sfnt_off00007903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7903 10088 bytes
SHA-256: 7e875689400941bcad0926c63ba87885bc91689d6f289669623d21a91e03090a

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