Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3a7bda14595cc4…

MALICIOUS

PDF

75.1 KB Created: 2021-02-07 22:52:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: b59510f98048a45684da1925fc780f58 SHA-1: 53bbec12ee16206bb9cb2f83bc7bb6e13073556c SHA-256: 7f3a7bda14595cc4e69af9262cbdffa4b062d2c7ea057f095fe99b2458c61206
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://baarspo.ru/wb?keyword=billboard%20music%20awards%202018%20performers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4501789/normal_601b1ce5f0dc1.pdfIn PDF document text
    • https://cdn.sqhk.co/gakilofod/iejgig4/94249569871.pdfIn PDF document text
    • http://cactusvpn.live/721324550626xw0b.pdfIn PDF document text
    • http://chelamela.org/48772200652x0udb.pdfIn PDF document text
    • https://vedewoxid.weebly.com/uploads/1/3/0/7/130738666/8576258.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447263/normal_5fc5992837053.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383688/normal_5fdc3372297d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419003/normal_5fde852a723d9.pdfIn PDF document text
    • http://livecopyrightverification.com/towegubupoduboihoz5.pdfIn PDF document text
    • http://trellos.fun/39976598556s0uyq.pdfIn PDF document text
    • http://sq11mini.com/45684839839nvt65.pdfIn PDF document text
    • https://giberala.weebly.com/uploads/1/3/5/3/135306284/3124330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489407/normal_601cc3af95e39.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/gaxuremewuger/vikudilajugag.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/smartsheet_dashboard_charts.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_off0000e3b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B5 6100 bytes
SHA-256: e3819fe8cf9a15eadb0abe43efa98a037e90e3b0e9174bf86dbb0043e7c8abf9
font_01_sfnt_off0000f87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87B 11164 bytes
SHA-256: 1644ecdba72a662b94fd0dd5b0f0c74d3172a55bb1c4032f711207f1590f8936