Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c91fdfc794f2466…

MALICIOUS

PDF

65.7 KB Created: 2021-02-13 20:51:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b8bd60a3d4bde2220328aed4a0a77012 SHA-1: 4fb90c7dff8a3e1caf8d880feb88874058151286 SHA-256: 6c91fdfc794f2466792c63fc8dc053464488b6c2def5a840da9f70647665755f
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://druttle.ru/wix?keyword=lexus+rx300+service+manual PDF link annotation
    • http://com-signto6.xyz/bass_booster_program_pcenxso.pdfIn PDF document text
    • http://clyb-wylcan3.space/ccleaner_free_getintopc9nha9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450439/normal_5feb480e53369.pdfIn PDF document text
    • http://spencermcman.us/pricing_interest_rate_derivative_securitiesyl728.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489740/normal_601d5011e1545.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390366/normal_5fe4f96a6017e.pdfIn PDF document text
    • http://manaluw.iblogger.org/chinatown_movie_songs_free.pdfIn PDF document text
    • http://brumbum6.xyz/99755112014prycd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/suxiweke/11275312263.pdfIn PDF document text
    • http://famebod.epizy.com/zivatenulijexutiwa.pdfIn PDF document text
    • http://wowadowir.epizy.com/marcelo_burlon_size_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c464.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC464 5320 bytes
SHA-256: 1155e45eaf1fae487ead11899df18369f10002240d29489ad7d3aceeb54cd651
font_01_sfnt_off0000d66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD66C 10476 bytes
SHA-256: 85a66970e02c1c6a5cf4539d4da84379d5dbc0eae10e83cbfef24f99d66f0660