Malicious PDF — malware analysis report

Static analysis result for SHA-256 237eb118f25f98c1…

MALICIOUS

PDF

77.2 KB Created: 2021-03-01 22:24:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eb2e73ecb2e6778e0e43cdb0c955b62c SHA-1: 83329fb29e91f3b7a5fda46e0200b6c09cc174a6 SHA-256: 237eb118f25f98c1cfc807d54a6313ee753a410ccb036bf4e80d4acbaa6555a5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://kuzutuzo.ru/award?keyword=how+nandini+died+in+ponniyin+selvan PDF link annotation
    • https://julixejim.weebly.com/uploads/1/3/5/3/135393951/3862361.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380536/normal_5ff8fb5fb02d7.pdfIn PDF document text
    • http://specialsale.info/90418899643dctkj.pdfIn PDF document text
    • https://cdn.sqhk.co/genizataxom/ejbhkhh/sadidigamikolujiz.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/kavi_bana_jathaka_kathaxduoo.pdfIn PDF document text
    • http://rte-ita.fun/daxepivedubukosozzlmdu.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/cgcKKjj/98202538792.pdfIn PDF document text
    • https://cdn.sqhk.co/bivadudit/Tjh9JmX/11870067180.pdfIn PDF document text
    • http://1xbets-regs.site/415959553369xw4o.pdfIn PDF document text
    • http://musc-media.xyz/watch_alone_together_pinoy_movie_online_free5t2oq.pdfIn PDF document text
    • https://cdn.sqhk.co/libavesonon/gdAOS8s/monkey_flight_2.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/saduko.pdfIn PDF document text
    • https://cdn.sqhk.co/zajagatetode/ViiJhcQ/swing_trading_day_trading_scalping.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482402/normal_5fec8fbc57962.pdfIn PDF document text
    • https://lozusometuzasop.weebly.com/uploads/1/3/4/7/134741376/logif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vokesakogo.onlinewebshop.net/my_passport_ultra_how_to_use.pdfIn PDF document text
    • http://gafodix.myartsonline.com/jebowajide.pdfIn PDF document text
    • http://zikoliduxa.atwebpages.com/7593408620.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_off0000f249.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF249 5072 bytes
SHA-256: 5c09d6c7b2aec8254dd808ae5a3a7f7a4b5fb0391977ead41dbc3da4d6749b41
font_01_sfnt_off000103bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103BB 10600 bytes
SHA-256: 54fdc66e4f02185f24f405c3086210f2a6614013b01744b1758e380b29ba0210

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