Malicious PDF — malware analysis report

Static analysis result for SHA-256 147667c16d19fdbb…

MALICIOUS

PDF

41.2 KB Created: 2020-10-13 14:29:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 3bc5c672e81d8edb112c3b47abef462b SHA-1: 595b0a683b7d77fa71a471f9316bb2b4ba6b0f70 SHA-256: 147667c16d19fdbb19e2b6d79a5c91e5d754cc22611bcb6e2b507297cca15078
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://cctraff.ru/strik?keyword=compress+pdf+online+200kb In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/5473886.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/e5bcd2697.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/vaxukekiwurefebe.pdfIn PDF document text
    • https://site-1040299.mozfiles.com/files/1040299/26456896659.pdfIn PDF document text
    • https://site-1048260.mozfiles.com/files/1048260/marunuragabupofesazuz.pdfIn PDF document text
    • https://site-1039283.mozfiles.com/files/1039283/10029352079.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/vepulakanug.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/4102594.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/5058540.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/417a194b-1f1c-4774-9aa2-590700850231/51667639718.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ff0b877-b075-41f4-ad34-655dcec2c103/45292220390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/824cf2ea-c4d0-4dd2-817f-2e432a0c36c8/xokilejepudeturokidadiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98e3e7ec-9615-4777-b83c-2d818e7f8f9b/8681930099.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9fe1fd6-7d5e-422a-a879-7fb3824b9bc6/37586303914.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_off000062f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62F3 5360 bytes
SHA-256: 9b82cb0960ff2a5cc8520dadb1b5a4f0434ccdf205b4500be45e38ed7c1ce03a
font_01_sfnt_off00007514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7514 10336 bytes
SHA-256: 176a55a272a3f12f9979ea845faa4b6aa2235f78e603305c729d21e3a6be3d3b

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