Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f8da008cfef84a…

MALICIOUS

PDF

45.2 KB Created: 2020-07-25 20:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2437a17d08f5766f6ff47989ddf2d7ec SHA-1: b178dd3e952e22ba1b15245b446613edd4339c4b SHA-256: c2f8da008cfef84a610b74c7566943688c3866bafc94a2ec9b89b5054ccc0ed0
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This URL is designed to lure users into clicking it, likely leading to a phishing or malware download site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of numerous embedded links, many hosted on Shopify, indicates a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=sharepoint+2013+create+list+from+excel+spreadsheet In PDF document text
    • http://files.garysrd.com/uploads/1/3/2/6/132696154/vujukatiradodaka.pdfIn PDF document text
    • http://files.christinabhoward.org/uploads/1/3/2/7/132712661/710351.pdfIn PDF document text
    • http://files.ctnonline.com/uploads/1/3/2/3/132303163/a5f1e62e8f2.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/1/0436/3000/2336/files/nemepetezipixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/2178494761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/jabexumimawaxubexuvotafan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/webaliwidesozinotipiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/47641407455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/56625862767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3042/files/16129612134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zitadeduwifugegumav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0311/6709/files/60565980771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3308/4575/files/22895335211.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0758/2106/files/9102586752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9826/8065/files/48625514920.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A5 5844 bytes
SHA-256: bbc287f2638d97b2825f097f967a8c0e1c701532876131363503e75db2c26add
font_01_sfnt_off0000854e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854E 9968 bytes
SHA-256: 65316acb6aaef0905ad4290d0c043b0ba52709f44c32f18675fc55b42b54445f

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