Malicious PDF — malware analysis report

Static analysis result for SHA-256 8596998c610aba6b…

MALICIOUS

PDF

43.5 KB Created: 2020-10-11 00:25:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d6c32e1925c245472e9c2b1b27669fe6 SHA-1: 171c197d0f750fa12192204b55ec889d0bbc6f3b SHA-256: 8596998c610aba6b03b70e35808745f58f0df5e792ad91d554bd9fb98dcf524d
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to disposable hosting and redirector infrastructure, indicating a link farm designed to lead users to malicious content. The ML classifier strongly flagged this PDF as malicious. The embedded URL 'https://gettraff.ru/strik?keyword=stevens+creek+car+dealer' is a primary indicator of malicious redirection.

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://gettraff.ru/strik?keyword=stevens+creek+car+dealer In PDF document text
    • http://wojav.crime-fighters.com/uploads/1/3/1/6/131607600/1453613.pdfIn PDF document text
    • http://files.eyecenterofmiddleburgheights.com/uploads/1/3/1/4/131438405/fee90d.pdfIn PDF document text
    • http://files.w4sight.com/uploads/1/3/1/4/131437194/lupaxivusu.pdfIn PDF document text
    • http://gavurimuv.sig10-cleaning-decontamination.net/uploads/1/3/1/4/131453501/73f0f3310d.pdfIn PDF document text
    • http://files.colliersdecoys.com/uploads/1/3/1/4/131437091/8646586.pdfIn PDF document text
    • http://tosewaw.eventsforyou.net/uploads/1/3/1/6/131637306/3233535.pdfIn PDF document text
    • http://files.gospelhmongalliance.org/uploads/1/3/2/6/132680869/dc8c52.pdfIn PDF document text
    • http://files.markcreative.ca/uploads/1/3/2/6/132683484/3697080.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/16d1fb2f-f771-499a-9553-c100de121475/64012312872.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ab2241d-cc2b-4359-9164-0ca4bf737d0b/84972397678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1711bc61-ff21-4cba-9581-ca46234b5040/loxupevosipa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bec3bd8-0a94-4b49-aef8-53b76ee080b3/80386526820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4248/0021/files/60201921782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/2818/4739/files/46700978512.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 8

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_off000065de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DE 5160 bytes
SHA-256: 519c686eb072842762ef8e07a7b376c593a92981fb0afbeca3b18ed222d057e6
font_01_sfnt_off00007778.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7778 12892 bytes
SHA-256: c282d4cacefaf13cb6e3bb2e906a62148dc7683f8ba243892c45cef209084561

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