Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc268ad44fffc83a…

MALICIOUS

PDF

41.4 KB Created: 2020-08-06 17:03:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f73865d2eec7e24c374b6aad6e50ae0 SHA-1: b0afd407bf03cb781a8285dedb1b09caa5da8ad3 SHA-256: fc268ad44fffc83a3cf44d0172b4f3f9153d89cde279023be632a02c94b8da5b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO spam or to redirect users to malicious sites. One prominent link, 'https://ttraff.com/pify?keyword=working+of+2+stroke+diesel+engine+pdf', is flagged as a malicious redirector. The document body, though partially garbled, contains text related to 'working of 2 stroke diesel engine pdf', suggesting a lure to disguise the malicious intent. The presence of a large number of external PDF links further supports the SEO spam or link farm attack pattern.

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=working+of+2+stroke+diesel+engine+pdf In PDF document text
    • http://files.stjohnsdunellen.org/uploads/1/3/1/6/131606046/ee04d81830cd9a.pdfIn PDF document text
    • http://files.dpjutzi.com/uploads/1/3/1/8/131859370/rozimopoxabipomo.pdfIn PDF document text
    • http://files.kujawaorchids.com/uploads/1/3/0/7/130775588/sipikapemuzexog.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/1/0435/7927/7467/files/koxeson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9066/4860/files/rosodipilizusaduliretu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/4260782142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2134/2619/files/6653343291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/doosan_lynx_220_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56773010908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7926/1590/files/56714743005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1838/6588/files/dawexukesimimirolozikegab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/63908049928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1220/2389/files/vutiwovodinoleve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7592/8215/files/42019890832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/kokitoravetitop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/vugexowa.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_off00006407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6407 5208 bytes
SHA-256: bb6d13bc03caf322c8e8f20062d7023eb95fdae0785547f405a34cba3af02eec
font_01_sfnt_off000075f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F0 10076 bytes
SHA-256: 608ff2bbbb6ac63b754c69a9b57d3397dc509d387273e2d2f78f2992ed10f46a

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