Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e51a73355596fc…

MALICIOUS

PDF

42.0 KB Created: 2020-10-16 15:28:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 5339c6467f4ad127e17aa408d8fb7a15 SHA-1: 7c1878e6ebc55170f490c2387f70abfb8e0da4b7 SHA-256: d3e51a73355596fc5afa7ec628ac2ce04919b7054e360ecefaf2dc27180f9655
184 Risk Score

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/wb?keyword=licence%20epgv%202018-2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f880be19c349.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f870d9be05d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f873d97d2c08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f88176cca323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371800/normal_5f885813738ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369659/normal_5f88b95cc4c86.pdfIn PDF document text
    • https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/minanazusowofaxu.pdfIn PDF document text
    • https://rojusonevupa.weebly.com/uploads/1/3/0/8/130814232/vaxelivavun.pdfIn PDF document text
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/sajuwugi.pdfIn PDF document text
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/naxadebumanojofabi.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/zimikobo_lolal_fosovonebeb_tanawe.pdfIn PDF document text
    • https://naxesitigas.weebly.com/uploads/1/3/0/7/130740165/merarexukokoxopi.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/zopexakunifon.pdfIn PDF document text
    • https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/datobudiliduku.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/5598480.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/dolopitubolagu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006136.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6136 5296 bytes
SHA-256: 8733128fdfac95c2ea956b928f8384d87a99a41938a890e35aff5b9d938143da
font_01_sfnt_off00007370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7370 11832 bytes
SHA-256: 32480bce7318f14c141dc5d3e226c000db0a4a4b299c32a790b8ac3a290e37d5

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