Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f0f3a4db3eddc9e…

MALICIOUS

PDF

70.5 KB Created: 2021-01-26 23:26:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: cfdf2e5cde06fb98ac66b57c53bf3554 SHA-1: a8eae2f585c645ff5cfb88ec5d8abb378da54fee SHA-256: 8f0f3a4db3eddc9e3bd28bfd4cdcbf2e2fbe1a910260b5b13a2e8fef597aa069
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=manual+deep+water+well+pumps In PDF document text
    • https://cdn.sqhk.co/padixemugex/hgjgThh/game_on_the_rails_brian_upton.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478141/normal_5fed48da1ed42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487641/normal_5fe05973d0496.pdfIn PDF document text
    • http://prodit.space/europe_front_full_2._3._1hy0gv.pdfIn PDF document text
    • https://cdn.sqhk.co/businaxidare/eiefOY7/colour_palette_word_meaning.pdfIn PDF document text
    • http://hookup157.fun/gekeruviwerujifotorew1n44q.pdfIn PDF document text
    • https://cdn.sqhk.co/rufadexu/f7MpgjI/pongal_restaurant_laurel.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/vudivuzakal/gorogixaxazotugefuset.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/free_business_letterhead_templates_with_logo.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/99963925499.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/govubivo.pdfIn PDF document text
    • http://xatudoxi.epizy.com/philips_avent_monitor_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/xalidosotilabejabef.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/xabevotugixikamedowadela.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/garer.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_off0000d743.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD743 5204 bytes
SHA-256: 1171814785fb528155f6c35c770052277a1dfc4ed229cff794b113c00280a257
font_01_sfnt_off0000e8fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8FB 11040 bytes
SHA-256: 93111fe659b840cb97e9bd945bf4b6cad764f229cf11625726fbd1d100309142