Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f009a686527d051…

MALICIOUS

PDF

52.4 KB Created: 2020-08-05 05:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15469d4439941351faf90fb9ae154386 SHA-1: dfb6be4b1eb13ff703530f634c551f37e4a779d8 SHA-256: 4f009a686527d051d99bb035d6667745ebf78c13d86a3c752fac68ffae37360b
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is designed to lure users to malicious content. The document body, though heavily obfuscated, also contains this URL and numerous other links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is used for malicious redirection.

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/pify?keyword=brief+summary+of+the+bible+from+genesis+to+revelation+pdf In PDF document text
    • http://files.envirolawteachers.com/uploads/1/3/0/7/130775528/3ba7ca2.pdfIn PDF document text
    • http://files.ontarioboardshack.com/uploads/1/3/0/8/130814636/vidatexonan.pdfIn PDF document text
    • http://files.nextgenrugcleaning.com/uploads/1/3/2/8/132814476/9bc843afb90968.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/1/0437/8827/1777/files/pinellas_county_homestead_exemption.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1600/9374/files/nuxava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5860/9819/files/52105538511.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/kifewegisifitomukigijew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5225/2829/files/rowofegowaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5489/0149/files/16034521499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/tekikukada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4998/3901/files/wenod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/tivesemasek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/xazafubuxikozikebota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/jitexut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5089/2454/files/buxikufasubexil.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 4

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_off00007e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E28 5688 bytes
SHA-256: 70e6650ce9640a9d713b35aa214835aa2adcd05e4f0e85c5f4f22b4d909556b4
font_01_sfnt_off00009161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9161 10156 bytes
SHA-256: a0dd12473910617b9bae58cfbe8df58ac1b1680091fd97068169b121ad8dc93f
font_02_sfnt_off0000b412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB412 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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