Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe3880a28f6dc10…

MALICIOUS

PDF

37.6 KB Created: 2020-08-24 05:21:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2abdbd93939e09d8301e687f5c89f47 SHA-1: 96e5a508ed85d6b7d4708ed4f77ab6639415f3ec SHA-256: 8fe3880a28f6dc10910e0bca5c5e7f907ac7128662ed0209b58728ce04bc5d09
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 used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same URL and references to sheet music, suggesting a lure. The presence of numerous other links to Shopify-hosted PDFs indicates a link farm strategy to improve search engine visibility for malicious content.

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=jarabe+tapatio+sheet+music In PDF document text
    • http://files.legato.ca/uploads/1/3/0/8/130814216/db414e09e307.pdfIn PDF document text
    • http://mekapur.sabahmethodist.org/uploads/1/3/1/3/131398020/lesapeporezumib.pdfIn PDF document text
    • http://files.alyssamichele.com/uploads/1/3/0/7/130776745/eed7ccac46.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/1/0431/3461/5708/files/rajixuweniluwubinatevow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6747/4087/files/calorimetry_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6099/3943/files/plex_optimized_versions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1290/5370/files/75164650424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/zesaxowaguzeguniwopata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/benefits_of_artificial_intelligence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8105/6675/files/93846547836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6057/5912/files/15139862198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/32428246639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7093/0600/files/point_biserial_correlation.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_off0000568f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x568F 5272 bytes
SHA-256: d713f7f22e49815f0933202eac1c963574ca9bb029937b541d085e82fa6252bb
font_01_sfnt_off00006850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6850 9896 bytes
SHA-256: bf279bb3997fda9b25a33b33b55eff4cb54a5f0ae21247168a08671907d01585

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