Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe95facd36c7367b…

MALICIOUS

PDF

39.3 KB Created: 2020-08-26 15:55:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36f4fda2c85853ad6ae696091bfaa893 SHA-1: b7f43b12d9b284cf0508a270ff730de321566099 SHA-256: fe95facd36c7367b1165ec1c6c23b8a97197a9cf0967b6be65f175f96ff3770b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a deceptive title and a large number of embedded links, many of which point to external PDF files. One critical heuristic identified a link to a known malicious redirector, ttraff.me, which is likely intended to lead the user to a malicious site. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the title 'Capture! by sonic assault download' and the redirector URL, reinforcing the lure.

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.me/pify?keyword=capture%2521+by+sonic+assault+download In PDF document text
    • http://files.wilsonfarmmurfreesboro.com/uploads/1/3/0/7/130739704/zedek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/35339881814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2468/4968/files/alternative_energy_sources_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0744/2072/files/automotive_technician_certification_test_preparation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81108552740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5070/3779/files/digomoronozevijanalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/caldera_spas_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7883/4586/files/gizanogubori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3830/1590/files/27319017028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7607/5164/files/agri_annual_2020.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 5

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_off000050ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50ED 5356 bytes
SHA-256: 169d0babe9b9b22e76c468486a96fd57c057f7f68c457e4d3a37ac7339d01f47
font_01_sfnt_off00006347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6347 9060 bytes
SHA-256: b101e0cbf43a539f2c8f339de2155f8584cc1ccc94943717a505a0420fa7a5f1
font_02_sfnt_off00008253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8253 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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