Malicious PDF — malware analysis report

Static analysis result for SHA-256 7556ff9295d18136…

MALICIOUS

PDF

36.8 KB Created: 2020-08-26 19:30:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0240358c4816541ac835d851666def5 SHA-1: 1bea33f187dc5b1a4a7a2dd5a8d50d575a8577c2 SHA-256: 7556ff9295d181369823472551d449c79e8d20ee5341433d7a0e2075c360d78e
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary redirector URL, 'https://ttraff.ru/pify?keyword=chairmaker%2527+s+notebook', is identified as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting a phishing or scam attempt to redirect users to malicious content. The presence of a link farm heuristic further supports the malicious intent.

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=chairmaker%2527+s+notebook In PDF document text
    • http://vogif.clairehinchman.com/uploads/1/3/1/3/131380600/125feaa9434.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/1/0453/8872/6440/files/biology_102_final_exam_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0207/6070/files/woxekipejor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/african_history_timeline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/putajidigijomanepezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/60484081649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7373/9675/files/lubelotise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/kugiketajiw.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 2

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_off000054ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54AE 5036 bytes
SHA-256: 29742a3a54418bb725d8e73f97042425f84a5daa1f3d74ba66c8b0de72f747d2
font_01_sfnt_off000065aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AA 9796 bytes
SHA-256: dce6dfaa2b5989b4127a2361436446d3901eec43b6e8dfac477fe98b233626ed

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