Malicious PDF — malware analysis report

Static analysis result for SHA-256 d99aa323f7846968…

MALICIOUS

PDF

71.4 KB Created: 2021-03-01 20:35:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8361bb4e3659b322aa00916bf4430785 SHA-1: 0d0c98b15090896a0955f3cb186bc04805f67013 SHA-256: d99aa323f784696886649ec76898037516d1ed9882da892ccd35e8624e71cf58
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://kuzutuzo.ru/award?keyword=how+to+make+workbench+legs PDF link annotation
    • https://cdn.sqhk.co/nomelafu/j5ULgc8/88316920776.pdfIn PDF document text
    • http://tefitagesev.mypressonline.com/35553200018.pdfIn PDF document text
    • https://cdn.sqhk.co/fokatekox/ihtL1ih/lukivarafumekesotuwosexu.pdfIn PDF document text
    • http://tiwilofojifig.sportsontheweb.net/2004_odyssey_transmission_fluid_capacity.pdfIn PDF document text
    • https://fipamowusaki.weebly.com/uploads/1/3/4/8/134879766/9252777.pdfIn PDF document text
    • http://nupubidodeje.22web.org/metformin_1000_mg_twice_daily.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/iachifz/xibupivolu.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/fusopoxipo/autodesk_maya_apk_for_pc.pdfIn PDF document text
    • http://taxisariwoboduz.epizy.com/gitejewoxuxijav.pdfIn PDF document text
    • http://bitines.myartsonline.com/97074985554.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/wepariso.pdfIn PDF document text
    • http://dajivetu.rf.gd/sogozofawuzexotijijised.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/resalel.pdfIn PDF document text
    • http://bojuzafi.rf.gd/95106487367.pdfIn PDF document text
    • http://zotomogizolelaz.rf.gd/24852835162.pdfIn PDF document text
    • http://jemejuzot.epizy.com/lake_hartwell_largemouth_bass_fishing_guides.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/logazazit.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_off0000dbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAD 5468 bytes
SHA-256: 7e8a0916d0ab26a4c5e6483c189e921de91336621449cc8ba2d6881cd3c07ce7
font_01_sfnt_off0000ee2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2D 10008 bytes
SHA-256: 1386105dbab97de2bd589c2f2efa87abb7d793430a19d80def680d2981ec37be