Malicious PDF — malware analysis report

Static analysis result for SHA-256 9976912de561178b…

MALICIOUS

PDF

38.0 KB Created: 2020-08-22 21:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a16eb372b4f3feea863dc5d66d2dfd7d SHA-1: fc04dcbb33225596ee03cc8d41bafdc887841c11 SHA-256: 9976912de561178b5bf660d338cd9e85a1355142071457b0f808f7f5c20c550c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1200 Hardware Add-in System

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a mass external PDF link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=uniformity+definition+synonyms, which is likely used to redirect users to a malicious site. The document body contains garbled text and embedded URLs, further supporting the link farm and redirection attack pattern. 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.ru/pify?keyword=uniformity+definition+synonyms In PDF document text
    • http://wiramavuf.spaceartstrust.com/uploads/1/3/2/8/132816202/jabewuguwux.pdfIn PDF document text
    • http://files.fernhouseembroidery.com/uploads/1/3/1/3/131384555/6029657.pdfIn PDF document text
    • http://files.saintlawrencewr.org/uploads/1/3/1/4/131453255/4741528.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/1/0440/2659/3445/files/gujadevogotevinewudejol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8903/files/33263249958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/957904672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/ssh_key_file_permissions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/winds_of_winter_sample_chapter_barristan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5466/8705/files/kosob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7670/4664/files/jspdf_autotable_header_height.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2562/9347/files/zevubenixedozijifir.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 6

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_off00005678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5678 4904 bytes
SHA-256: 472909b7fd98bc62850d0f354803ba2fece00decd0c1a7b6861c0d755c5b06ec
font_01_sfnt_off00006717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6717 10648 bytes
SHA-256: fb19d92dfc4699b2962b80b87d985b1f0fdf3093bfafde40c832b921ca8fc7e2

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