Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb234064c46c47b…

MALICIOUS

PDF

42.5 KB Created: 2020-10-04 11:29:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 61eeb9f0013e236d5f6bbc3faafac45c SHA-1: 651f91a4d3315df82f4f5606f940b9e47d6598dd SHA-256: abb234064c46c47b887e3e5d4a33c29d88abc8e451e9921a34ee2b4635cbd3af
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=autocad+2019+xforce In PDF document text
    • https://site-1039903.mozfiles.com/files/1039903/93626595215.pdfIn PDF document text
    • https://site-1039759.mozfiles.com/files/1039759/65918358412.pdfIn PDF document text
    • https://site-1037061.mozfiles.com/files/1037061/24077180458.pdfIn PDF document text
    • https://site-1037222.mozfiles.com/files/1037222/faxigogarolulofedete.pdfIn PDF document text
    • http://pikolubi.kentlogburnercompany.co.uk/uploads/1/3/1/3/131384414/4a2eda27fc486.pdfIn PDF document text
    • http://dosazifas.jakeandchloe.com/uploads/1/3/1/6/131636991/ferugijajodejefel.pdfIn PDF document text
    • https://site-1039815.mozfiles.com/files/1039815/64737477942.pdfIn PDF document text
    • https://site-1037204.mozfiles.com/files/1037204/10675929302.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/bcfa454b-79d8-40fe-9a7e-b2ec6c8861ff/vatuvekoraseme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a2291fb-323f-4bf0-8159-2c9673fb2dad/80240534020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/479f309a-00ed-4cdf-a966-161dfa912476/vudogonuperiz.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B26 5072 bytes
SHA-256: 3fcfd24e4efb54786bece21d4ff6cf5fcf862e34fd87270ede07c3674e209f94
font_01_sfnt_off00006c7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7C 10168 bytes
SHA-256: 09786a8c33867cff528e068d3cba9b3c66c5877220d36392607647795ed99c53
font_02_sfnt_off00008f60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F60 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333