Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa38bc82eaedc32…

MALICIOUS

PDF

35.8 KB Created: 2020-08-18 19:56:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8de89d6b5442502445ab02dd3cc9ba5 SHA-1: cabac229fa38e6ca6e3aaba8c9dd91f5484d2f02 SHA-256: 9fa38bc82eaedc320d54203dc50b09498512f04f728d86fb6a18e5c4eb4e40e5
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the string 'admin panel roblox' and a URL that appears to be part of a link farm. 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=admin+panel+roblox In PDF document text
    • http://files.cozycatsanddogs.com/uploads/1/3/1/4/131406662/17b591e95d.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/1/0434/7658/2550/files/zijaranitugojewupula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/23269422648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3337/0529/files/bonefish_grill_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3450/7424/files/alkaloids_in_medicinal_plants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/97929271779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/90398248062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96672573922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2333/4565/files/gosivuxudepobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3721/2319/files/photosynthesis_and_cellular_respiration_quiz_9th_grade.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_off00004e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E28 5124 bytes
SHA-256: 433e5286662821668e666dc1b10175dffb42d6a6eb9ce5e93df4f40abe140d06
font_01_sfnt_off00005f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F73 10500 bytes
SHA-256: d89ce3d7d0f383c1cef8b952a7aca6f46caa6e58afe3b369e0b8c015cbd802ad

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