Malicious PDF — malware analysis report

Static analysis result for SHA-256 45bc90e5b55d8caa…

MALICIOUS

PDF

66.2 KB Created: 2021-02-16 19:55:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 0dc3fea6d37be76c2693673b7e68d64b SHA-1: e17333113738d7164c7d83582dfd1ac736f73323 SHA-256: 45bc90e5b55d8caae6d29a8c635d56fe1d1fb22de09accdc271243cd183c5767
136 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
  • 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/123?utm_term=llaves+allen+pulgadas+y+milimetros PDF link annotation
    • http://faxozulakevosos.iblogger.org/flute_clarinet_saxophone_trio_sheet_music_christmas.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/bieIieI/58683053762.pdfIn PDF document text
    • http://kixamugefuwa.22web.org/voyager_3200_user_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/gehhgiy/wadoragaxesez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489042/normal_60248ec842509.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461204/normal_6018ff24751f6.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/EPeWljc/takeout_near_me_mexican.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387815/normal_602b353cd8b4a.pdfIn PDF document text
    • http://totalcreditcheck.info/faxonaguleuf1go.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405904/normal_5ffa9c7ecdd78.pdfIn PDF document text
    • https://cdn.sqhk.co/kulukopupiw/dFihii9/warframe_panzer_vulpa.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/genukopapovixo/how_to_learn_korean_language_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/indesign_template_proposal_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/management_of_neurological_disorders.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/rekexilonedutar.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_off0000c3c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3C6 5384 bytes
SHA-256: 70e2ba76f1cfab4b1daf1f0c8738736b90b5226f0daf9558367b9cb00d992b7f
font_01_sfnt_off0000d60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60F 11152 bytes
SHA-256: 467b8cbe407666d25e7f86144be3b25e65671e04e6228ab5491470f152af4504