Malicious PDF — malware analysis report

Static analysis result for SHA-256 075118e424ae6766…

MALICIOUS

PDF

43.3 KB Created: 2020-08-15 09:24:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03e64084988c7247ddae62f4fb273619 SHA-1: edb6a8f258c16837c5c8c002f176a4f4d5187f90 SHA-256: 075118e424ae6766d38277a9405a53acd710b52134b3274749ed96ffec2f514c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many pointing to a redirector service (ttraff.ru) disguised as educational content. The ML classifier strongly indicates maliciousness. The primary malicious URL is https://ttraff.ru/wb?keyword=surface%20area%20of%20prisms%20&%20cylinders%20worksheet, which is likely used to deliver a second-stage payload or phish for credentials.

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/wb?keyword=surface%20area%20of%20prisms%20&%20cylinders%20worksheet In PDF document text
    • http://files.trimhairlafayette.com/uploads/1/3/2/7/132740424/bebiweji.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/1/0452/1204/1367/files/benim_hocam_video_ders_notlar_matematik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/podus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0224/7838/files/96851738113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kuvesagapixunijibofalase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0631/2093/files/4826130915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/81451055607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5265/files/skewness_calculation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3279/6574/files/reading_comprehension_exercises_with_answers_grade_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/35880190176.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

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_off000056dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56DD 5232 bytes
SHA-256: 204bd6ce283c50a84bafb80b85cd356e3209b5bf7fbae9e449265ac8ba45a0d7
font_01_sfnt_off00006888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6888 10176 bytes
SHA-256: 8a1afceab767a31eba0453b2cbd8f5205a8705af55d904996f3d39ddf8781022
font_02_sfnt_off00008b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B98 16128 bytes
SHA-256: 912810d83e1329c5b7c28468a93f9d6f76e9af1121491381c6555e9c9326e0fd

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