Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d85c3e563ec8cb3…

MALICIOUS

PDF

105.3 KB Created: 2020-08-30 12:46:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bbe637baa0b9bac3a7289225ad8cfa96 SHA-1: f1f8bc4ed0d806552c2a884b25030468abc6b938 SHA-256: 6d85c3e563ec8cb342ced0074a4f5fd395288e0a117257778292d1803b296941
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that point to a known malicious redirector, identified as 'ttraff.ru'. The document body, though heavily obfuscated, appears to contain the same lure text as the redirector URL. The presence of numerous external PDF links, many pointing to benign Shopify domains, suggests a link farm or SEO poisoning tactic to distribute the malicious redirector.

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/wix?keyword=how+many+hsv+gts+were+made In 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/1/0428/6539/3820/files/pataz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/povagijazoxarulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5960/1830/files/zolej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7200/3734/files/66055296692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4433/1680/files/ryobi_rts10g_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4184/0552/files/73198469505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/36181909336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/angels_and_demons_tv_guide.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8bbd7_c1695cd5219f4c288a447d8437444d24.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5ed537_9d954e1aa1734434b8ad15f52a6340d0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/66841992051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/sejifekolamavilid.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00013d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D23 5424 bytes
SHA-256: c428b41611d0e5a450bcf4c6d857eae5a64a7b5a7471fbd84c4a65962b23e3ab
font_01_sfnt_off00014f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F72 16456 bytes
SHA-256: 8c19f9346556dd2f5ff5d59e992dda25f03bd8dea139dbcddd9e78f6f0c841e1
font_02_sfnt_off0001830a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1830A 16060 bytes
SHA-256: b10e7a0583bf6b216a5471aeed10f14210f1dda3adb60ac5169fcb38ba12e60c

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