Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7c3a0dd058d380a…

MALICIOUS

PDF

42.7 KB Created: 2020-08-04 15:08:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e64650e7039844ba6c54260156fdd6a SHA-1: e8c438d7507cbc8a0e78b140ad1ed195033cbddf SHA-256: d7c3a0dd058d380a3bca6266a2584994828cfa1be07f0e92768922de234504e1
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and text related to a free textbook download, indicating a lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to improve search engine ranking for malicious content. No scripts were extracted from this sample.

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=essentials+of+human+anatomy+and+physiology+11th+edition+pdf+free In PDF document text
    • http://files.kurskeducation.org/uploads/1/3/1/8/131856308/sebukazibi.pdfIn PDF document text
    • http://files.stonyhillfarmsestore.com/uploads/1/3/2/8/132814929/fakoli_fugabapogipo_sudivazolenipoj.pdfIn PDF document text
    • http://files.bluesense-water.com/uploads/1/3/1/6/131636601/pidaduvikebi.pdfIn PDF document text
    • http://files.lynneeast.com/uploads/1/3/0/9/130969746/6426614.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/1/0438/1193/0274/files/sepemevugoxapixar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/23143763904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3858/6518/files/rei_s_minimap_1._10_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rimudunibodosugesujusuvud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7764/1116/files/gubevorukikekorufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/roland_ep_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5572/6238/files/noxevemejitonogomuwinil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4536/2581/files/wokimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1513/files/can_you_annotate_a_in_onenote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/in_chemical_compounds_covalent_bonds_form_when.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3366/4420/files/76794777384.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_off0000647a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647A 5568 bytes
SHA-256: 78597a79098d3238928067b0c6a8b0636cb922ba575c7f69b58d4cbd2fded9e9
font_01_sfnt_off00007753.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7753 10560 bytes
SHA-256: 588aefd2bec7227a02077388df9ab23eb28943a73f0720f88516d178d1a2f4b9

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