Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5c07c2c2e82033…

MALICIOUS

PDF

144.9 KB Created: 2020-07-31 22:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba8b586d333612666549c8d3021edaaa SHA-1: 38f3bbbe29fc77f356b09d5ad7ece5e0a25d0ced SHA-256: 5b5c07c2c2e820332e61b584ec3cce997564e89d86fd254543413def4e98f87d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the PDF is designed to lead users to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=cold+45+gungeon In PDF document text
    • http://files.creativecounselingsrq.org/uploads/1/3/2/7/132710787/5366484.pdfIn PDF document text
    • http://files.dburbancommunities.com/uploads/1/3/1/3/131380299/boxukafus-nivixamol.pdfIn PDF document text
    • http://files.nhage.org/uploads/1/3/2/3/132303322/04859f66217bb9.pdfIn PDF document text
    • http://files.eringilbreth.net/uploads/1/3/1/4/131438611/vusafusabovavo.pdfIn PDF document text
    • http://files.shopbellerebelle.com/uploads/1/3/0/8/130874284/3e578f659121af9.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/1/0437/8502/7746/files/71271881600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1005/4554/files/80091861149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1592/7965/files/4555658185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0664/files/20637586336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4339/5483/files/jebajute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9763/6512/files/46622656221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39843759369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9435/1778/files/risafijawuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13908697451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/71368972136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4448/6811/files/pudiximola.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_off0002021b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2021B 4628 bytes
SHA-256: 775d1fca4247545a8cd68edb94a6b930b5365f6e59d8383ad085097c624faf5b
font_01_sfnt_off000211f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x211F2 10696 bytes
SHA-256: 21ae195945be143fe8256f77b98b0fc78635d47ec251f034d491634435a269ff

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