Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2fe61f76a61175c…

MALICIOUS

PDF

49.2 KB Created: 2020-08-10 15:26:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e782192f2a432f22552a979021ef65f2 SHA-1: bbb146e28b9b380d3f8c2776794277b3b7b90f4c SHA-256: d2fe61f76a61175cf7c47d7f9df96c17596f2a2abda7120ef41c8961c27f157b
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=marketing+environment+pdf+book'. The document body, though heavily obfuscated, contains references to the same URL, reinforcing its role in the attack.

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=marketing+environment+pdf+book In PDF document text
    • http://files.olneyhelp.org/uploads/1/3/0/7/130776183/a48441c19.pdfIn PDF document text
    • http://liwunota.sarah-bass.com/uploads/1/3/0/7/130776485/5350602.pdfIn PDF document text
    • http://files.bsg-cbrne.us/uploads/1/3/2/7/132741476/5252175.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/1/0432/6971/8182/files/shoulder_impingement_treatment_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9358/0189/files/15683879860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1725/4558/files/69968441293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7641/9744/files/femiterilukozigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5490/4997/files/52106446164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2749/5074/files/gebubavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3278/0701/files/guridovezifud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1602/8309/files/legafuzijelenunitipudab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6317908028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3216/7068/files/91145292391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0898/9096/files/pibodav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3290/1789/files/autocad_civil_3d_road_design_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/61690254324.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 3

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_off0000827a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827A 5420 bytes
SHA-256: 99e234eb6a3a5ce0e621fe77a8c301e79c85126d28decd6957dd89b61e2577b5
font_01_sfnt_off000094e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E4 10144 bytes
SHA-256: c0bf975b7d6aa4aed4e64cb9f0114cb91bb0e10ede453aa89dd80ea0df811302

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