Malicious PDF — malware analysis report

Static analysis result for SHA-256 85dee5060262d90c…

MALICIOUS

PDF

73.0 KB Created: 2021-02-24 14:31:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 36585599d5053d60e9b3dfcc11c8e55c SHA-1: 9fce95503372ff182005962e74ab6c6f3408635f SHA-256: 85dee5060262d90cbf6f73211b60c5ca771e227609c35e5967f2e2e762f5c916
136 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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/award?keyword=best+wilderness+survival+tv+shows PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384461/normal_5fe35116613f1.pdfIn PDF document text
    • http://raisinshub.club/88887622545ozqez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478408/normal_5ff1fe21dc893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445338/normal_6032a5649ab4d.pdfIn PDF document text
    • http://decideyouself.fun/87732263248wo22f.pdfIn PDF document text
    • https://cdn.sqhk.co/mivivezar/bsba4Fq/mountaineering_sunglasses_with_nose_protection.pdfIn PDF document text
    • https://cdn.sqhk.co/bopelara/gjzjeie/nba_g_league_ignite.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462056/normal_5fe35b864681d.pdfIn PDF document text
    • http://superheatbelt.xyz/invitaciones_de_unicorniost8lqy.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/rheFhgB/xasujabugobutuno.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/dlGibhh/vapovolijudagonojez.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/genedonapubefe/69397505492.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/fusionner_plusieurs_avec_adobe.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/bited.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/mowedulajije.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/jowumafiwusekakukugediw.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_off0000e14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE14E 5116 bytes
SHA-256: ecbb2279278d354aa1f6994aac1220e169c4c25e1292d92b45eb88042e580e76
font_01_sfnt_off0000f2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C1 10700 bytes
SHA-256: 1a11a5b2972326150af54148ce061df233bccbd90d3a09fbef34f579121ff578