Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee4db36ea5f47bae…

MALICIOUS

PDF

45.9 KB Created: 2020-08-11 16:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0763078c834c8f647119edd99150b54f SHA-1: 3745164a2d4211ab77e27ccb64ea27cdc37f3696 SHA-256: ee4db36ea5f47baee30ce8df0ff2dba999565f27b4a67b96ed61ddec2ce1624e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=couch+to+5k+bbc+pdf'. The document body and embedded links suggest a lure related to 'Couch to 5k' to entice users to click on the malicious URL. The ML classifier also 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=couch+to+5k+bbc+pdf In PDF document text
    • http://files.finderskeeperscafe.com.au/uploads/1/3/1/3/131398134/xibokesedi.pdfIn PDF document text
    • http://files.louiseneaveportfolio.com/uploads/1/3/0/7/130775434/gisekoduparorubek.pdfIn PDF document text
    • http://files.omygoddess.com/uploads/1/3/2/6/132682882/xagenirowavevosip.pdfIn PDF document text
    • http://vawud.patriksoderstam.com/uploads/1/3/1/3/131384429/df9564c6415f.pdfIn PDF document text
    • http://gigamo.eyeholejig.com/uploads/1/3/1/6/131606165/fbe343e38846a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3050/3843/files/doxetunazopeguxulizun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5879/7471/files/dogumusiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/ds_rom_to_cia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/fuxadebub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2468/4955/files/complete_tutorial_of_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/luninuwewegetag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/59507559978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5265/files/c_programming_basics_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9597/2256/files/20470093567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/city_of_heroes_corruptor.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6947 4688 bytes
SHA-256: 30625bdee8c7807ed3affdeaae6bd4832ce0ce1d78a5bdb0ff6b88775949fbbd
font_01_sfnt_off00007946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 10384 bytes
SHA-256: 2eaa0b0a6a1c75b3ecbf17db212fbf8d1520bc4a406356c87a85468179129c84
font_02_sfnt_off00009cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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