Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7e74065ed763e64…

MALICIOUS

PDF

115.3 KB Created: 2020-09-17 20:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63bade398d3ae640e350f77da89b75a1 SHA-1: c08edbdf7f7ece2fedbb52ba4084610710448487 SHA-256: a7e74065ed763e647a3019eee8affca3ebcb94cef325cb645d646a7d904df191
184 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/wix?keyword=practitioner%2527s+guide+to+stochastic+frontier+analysis+using+stata'. The document body also contains this URL, suggesting the primary intent is to trick the user into visiting this malicious site. Additionally, the PDF was identified as a link farm, containing numerous external links.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/wix?keyword=practitioner%2527s+guide+to+stochastic+frontier+analysis+using+stata In PDF document text
    • http://files.boondhs.com/uploads/1/3/0/8/130813692/lepedinow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://679dcbb8-e74f-4384-93ed-8eda936dce9d.filesusr.com/ugd/83e584_a2f5d4c500f744bda9d1c2dce4715722.pdf?index=trueIn PDF document text
    • https://349a2316-fde0-4943-af41-17f8a1e9f085.filesusr.com/ugd/89064d_6e3e7850e59140699f7d30ae239b6c8a.pdf?index=trueIn PDF document text
    • https://08e383c0-a579-43ba-b27a-ef0f149ac54f.filesusr.com/ugd/3cb679_3b8ef56e89c644d2bd283353e2362c49.pdf?index=trueIn PDF document text
    • https://ca609332-aebb-4b92-9015-368734fdedd4.filesusr.com/ugd/4cd51e_7c9a69500c57458d9e9b7cda5fbdc7d5.pdf?index=trueIn PDF document text
    • https://104025b5-1416-4f39-a598-347cb4366f0a.filesusr.com/ugd/3d0627_5ee191e90df54efda093cafe63237149.pdf?index=trueIn PDF document text
    • https://41c4612b-7295-4a0d-a0b2-09160d53445b.filesusr.com/ugd/930050_a0bb6b4623a5421dbd7f4d69edf5c6de.pdf?index=trueIn PDF document text
    • https://3017feac-52f3-45f5-9f0e-fb0834abe554.filesusr.com/ugd/4b7290_9823b6efce9c4fcb9e5495eae0c4c219.pdf?index=trueIn PDF document text
    • https://9ecdbaa8-601d-446f-b86a-c54c238395b8.filesusr.com/ugd/d8966e_82938862ddf14b2d8351dbb0580b256b.pdf?index=trueIn PDF document text
    • https://54b81999-bfa5-4cef-a4bd-ff0af1ccccc2.filesusr.com/ugd/067ecb_65a0c428cebc450f9f690b3f7a58e546.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/geological_strength_index.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6970/9217/files/animoji_and_memoji_android.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001836a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1836A 5420 bytes
SHA-256: 07e4470e65700c1af9de9c45b075ac8a8d146889866cfd15e468ba69104130a4
font_01_sfnt_off000195db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x195DB 13024 bytes
SHA-256: 3575a7d29130dd63864014f67bc95ebb94187e032d2047f8cf6af463d1a07777

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