Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c1b59cc4085e45…

MALICIOUS

PDF

35.8 KB Created: 2020-10-03 05:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 99975bd5913cb7f825b0a2dc52f9129b SHA-1: 604b2b2e28ddeb438275de46f74ac825c868f130 SHA-256: c7c1b59cc4085e45cae5ec7d4a4abd25e3a79d941443fd433d5ee48ed86344e9
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://ggtraff.ru/pify?keyword=age+of+empires+3+cheats+asian+dynasties In PDF document text
    • https://site-1037266.mozfiles.com/files/1037266/jefinunidejukefoguz.pdfIn PDF document text
    • https://site-1037273.mozfiles.com/files/1037273/fepesox.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/23575533210.pdfIn PDF document text
    • https://site-1040002.mozfiles.com/files/1040002/44825430548.pdfIn PDF document text
    • http://fetin.thedesignsourceltd.com/uploads/1/3/2/7/132710592/1896963.pdfIn PDF document text
    • https://site-1036858.mozfiles.com/files/1036858/kixixubokabixusited.pdfIn PDF document text
    • https://site-1037279.mozfiles.com/files/1037279/dodofuvegevunujezikixali.pdfIn PDF document text
    • https://site-1040800.mozfiles.com/files/1040800/taroxamunu.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/fff48379-1167-492d-b13f-3f6847d5199f/sopopenubapuvun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfccfe05-c6dd-4b16-81f5-9f9444865ff4/29941046408.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6263e35-74da-47ee-9814-4f8313a31c7c/xerananebiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5136c32-6547-4959-b399-2189e9619e40/21935116570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9ec48f-c149-4fff-b0e2-d92ecbde208c/81343868930.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_off00004ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA8 5792 bytes
SHA-256: fefd51dd200bf81e550e850fa0dbefdbaa3a29203b2f6ceeab6f5ae79f44cb28
font_01_sfnt_off00006047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6047 10172 bytes
SHA-256: 984441ccf30a20cce44ea4c15808e543fbb2b282008055453ca9fa80eb4e551e

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