Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3a8ed93856a3124…

MALICIOUS

PDF

72.0 KB Created: 2021-02-18 10:36:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 220fa60f415b81c99f23a0091ca7292f SHA-1: a9e4d25f592d907a72ad16ace81a06e70c7db4d4 SHA-256: b3a8ed93856a312462f1b913c82a4f6fc2b676c2bd1864b97ca8a8325dd2334a
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/wix?keyword=thepirate+bay+proxy+uk PDF link annotation
    • http://kpupnov.pro/sejimulofo0wmyp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484375/normal_600299588fef9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384035/normal_5fec7d85b08a2.pdfIn PDF document text
    • http://accueilcmb.com/864421957593jv35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388427/normal_5fc9a80fb1adf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500669/normal_5fe3a8e1e390e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472501/normal_5fc8b92356970.pdfIn PDF document text
    • http://xrootunited.com/dekubagowefanazabezeuntvh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368221/normal_5ff67c223ee11.pdfIn PDF document text
    • http://hookup157.fun/sofapopepabizakusuwufuswq529.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447079/normal_6025b29630022.pdfIn PDF document text
    • http://euroshopmn.space/22813333748h5sdg.pdfIn PDF document text
    • http://copyright-infringement.business/97550091132jondv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401982/normal_6008bf68a5bf4.pdfIn PDF document text
    • http://rubyshup.space/senujozoboleropexuzeh4tk1.pdfIn PDF document text
    • https://cdn.sqhk.co/tororukiwuri/RidhaRj/33833046602.pdfIn PDF document text
    • https://cdn.sqhk.co/mezugifosa/l1igOJy/followers_skyrim_blades.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408702/normal_5ff2615f687d7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pisisagul.epizy.com/bunty_punjabi_funny_videos_free_mp4.pdfIn PDF document text
    • http://wonenuw.epizy.com/wedding_reception_schedule_of_events_template.pdfIn PDF document text
    • http://faxunarin.epizy.com/paid_internship_contract_agreement_template.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_off0000de46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE46 5020 bytes
SHA-256: 66550200f16624bed816f6ccb2bd924b9e841fa1033e75b13a88e1822b136c88
font_01_sfnt_off0000ef57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF57 10396 bytes
SHA-256: 25500928c5e6b75bd5692c71c1c699c5155683299f0a71fb023331911c49b623

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