Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e91d494960d582…

MALICIOUS

PDF

45.6 KB Created: 2020-08-17 08:58:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 20862d6141ea311b63df2ab5f0d6fbf8 SHA-1: cd75a43443b3722d4f7ca0eede6d8fe94332114f SHA-256: 38e91d494960d582768c9aeb8fab72bd69fafd27e4bdc39a00e88c2c51fb2c07
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and a related query string, suggesting an attempt to disguise malicious content as a technical document. The presence of numerous other links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=c+class+template+array+size In PDF document text
    • http://files.maxstrength.org/uploads/1/3/2/3/132302888/1b7e87.pdfIn PDF document text
    • http://files.alberta-legal.com/uploads/1/3/1/6/131636655/vijaguz.pdfIn PDF document text
    • http://files.ambrosechiropracticcare.com/uploads/1/3/2/6/132681657/49303b0898298f.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/1/0432/3367/3380/files/vosisibogoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4103/4135/files/ccie_routing_and_switching_v4._0_configuration_practice_labs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0141/files/wogupesudeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/87751091601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0267/4845/files/69551553519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/html_to._net_core_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/15125569803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6754/7546/files/kofiwekimalupelutez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/applications_of_nanotechnology_in_material_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/46802955902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8176/8872/files/raxokipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6525/files/tolib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/27338591597.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 4

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_off0000669c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x669C 5136 bytes
SHA-256: 3128a251d4e1126c3c4b87e0bfc74941e34bb1e040d61d24b1d61a5ee5b12101
font_01_sfnt_off00007805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7805 15856 bytes
SHA-256: 989d6b3a4e6b784339d052ad9a0499c8d9c4d939c0fb258607bd4d15f53e21ba

Open this report in the interactive analyzer, or submit your own file for analysis.