Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c4e44e11a5ee19…

MALICIOUS

PDF

71.3 KB Created: 2021-01-30 19:40:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a157665c6dcd53fef4bc30e050dd25e5 SHA-1: de05a8027064c961b589e04e32694357c09c2981 SHA-256: 06c4e44e11a5ee19a7fc796673f2ea32af7f53c47f32a257092a22bbcd74104f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://crophysi.ru/aws?utm_term=romantic+bollywood+songs+lyrics In PDF document text
    • https://cdn.sqhk.co/verexoleki/hc4hhd9/pixowerimixumaromarex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467926/normal_5fe8e6cfb6451.pdfIn PDF document text
    • http://difavusimope.iblogger.org/safabimal.pdfIn PDF document text
    • http://kozaredibedemok.iblogger.org/65091717613.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/ihiijaJ/ethereum_wallet_download_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/golizojuw/hbijihc/40914646673.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408188/normal_5fdccde62f09e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386076/normal_5ffc28688a2b0.pdfIn PDF document text
    • https://cdn.sqhk.co/noligigibar/cnNhdii/ticket_to_ride_beatles_tribute_band_connecticut.pdfIn PDF document text
    • https://cdn.sqhk.co/gegenosuzun/gcBoIjb/88879955793.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407749/normal_600d8a77a9f31.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wafepugi.rf.gd/22512326474.pdfIn PDF document text
    • http://zewixezix.epizy.com/kingsoft_spreadsheet_2017_free.pdfIn PDF document text
    • http://nitesegu.epizy.com/rocket_league_cross_platform_steam_xbox.pdfIn PDF document text
    • http://wulitebajanuba.rf.gd/jadapanasita.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_off0000d7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7ED 5600 bytes
SHA-256: 7cb4c6895f85244e6534529f5633b2c0a5370f8554b0abc4e0e7aca3fcd48c27
font_01_sfnt_off0000eaf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF9 11000 bytes
SHA-256: d4c64dc3011f75649ce306b1fb9ca20424d1be45e331593531d53f4534f8d454