Malicious PDF — malware analysis report

Static analysis result for SHA-256 c04fffa40e87e99d…

MALICIOUS

PDF

38.6 KB Created: 2020-08-08 14:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80fcbf5d04bc97dcf0be13c5e34bd628 SHA-1: d73c32a2739078d71ab0c4b4b46b0308193c0fc9 SHA-256: c04fffa40e87e99d881dbaad268eacfa11086e4ce3bb2ec7730441d7439d0975
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, disguised as a search result for 'agony into the woods sheet music pdf free'. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse. No scripts were extracted, but the primary attack vector appears to be directing users to malicious infrastructure via the embedded link.

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=agony+into+the+woods+sheet+music+pdf+free In PDF document text
    • http://dusajo.twincitiesproam.com/uploads/1/3/1/6/131606349/5669532.pdfIn PDF document text
    • http://files.peteandolina.com/uploads/1/3/0/7/130776619/22b9e.pdfIn PDF document text
    • http://files.skilledlearners.com/uploads/1/3/2/6/132681394/2003340.pdfIn PDF document text
    • http://files.oakmont85south.com/uploads/1/3/0/7/130739174/1762308.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/1/0432/8862/5302/files/nezexalupolopiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5500/3286/files/gezob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/31550312579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9560/3862/files/lonadatew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8658/4733/files/56425263463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9386/8187/files/no_man_s_sky_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zututekafufefosapebuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5522/6773/files/95223619146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/62996853258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2156/5084/files/bible_study_lessons_for_young_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/roxaduse.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000491a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x491A 5392 bytes
SHA-256: 8488682ec8973f847a377070c7c3e401b644aaf6b61b677a2b8f689c6c114b87
font_01_sfnt_off00005b67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B67 10500 bytes
SHA-256: c0bde541f2fc565529a7a131056cf3b07b01891411825c7808d6e4c6f5c91da5
font_02_sfnt_off00007f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F40 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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