Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2378fb14cf8194…

MALICIOUS

PDF

36.3 KB Created: 2020-08-28 00:58:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 358e7914dc2f39a1d68f99e4c8c5722f SHA-1: 61be10d01b943a491c948fbcb1ebc6c488ada589 SHA-256: db2378fb14cf8194801be2696307e4b6b3423aa9b9a79f575b45f5ac755b111a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to ttraff.cc. The document body, though heavily obfuscated, contains the same redirector URL and a benign-looking PDF filename, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links were generated, likely to obscure the malicious redirector. No scripts were extracted, and the PDF structure itself is the primary vector.

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.cc/pify?keyword=fuel+for+ship+starbound In PDF document text
    • http://files.thepayee.com/uploads/1/3/1/4/131453048/pibinolepowemat.pdfIn PDF document text
    • http://kipux.collegedreamsconsulting.com/uploads/1/3/1/4/131406535/9eacbaffa643065.pdfIn PDF document text
    • http://files.adentamalaysia.com/uploads/1/3/0/7/130775949/261f5967059190.pdfIn PDF document text
    • http://files.blueskyoga.co.uk/uploads/1/3/1/4/131437149/9953346.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/1/0434/5007/3240/files/article_grammar_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/39831546312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0035/6251/files/61997976913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/79320352597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0623/7604/files/73171876290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/tezoxipewarejib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1929/5130/files/59650834228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3377/8597/files/voduvux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/notaruba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/3799/1583/files/cold_fear_ps2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3905/5258/files/xoruwezokizopob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7021/7623/files/suwowepofu.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 6

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_off00005107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5107 5224 bytes
SHA-256: 4a812dcf46ca869a18a145a4981c13eacaa1a7ee786cef3ae7e463a3a8d9b984
font_01_sfnt_off000062b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B8 10008 bytes
SHA-256: 2c5ca09031081adab7c8bda1f91bc9f3df84fd6ae331b6c25ef6908021e1fa9a

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