Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf780ec5ed02bb5…

MALICIOUS

PDF

68.4 KB Created: 2021-02-27 03:04:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6b06b8da6a04133bdd0124e091bd41e3 SHA-1: b6d01fa058465e904000c86e7f5dacc9b77ddbe2 SHA-256: 7cf780ec5ed02bb5e07489728529bc0c813dc937a247dc719a4f8c5b69d73e3e
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://ponafet.ru/award?keyword=breckwell+big+e+auger+motor PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401972/normal_6000ad1f5545c.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/ichcigs/pirigozipinolumujope.pdfIn PDF document text
    • https://cdn.sqhk.co/tigixexaxi/he7OMrz/the_intelligent_investor_benjamin_graham_ebook.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448744/normal_6007442a3ed34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460230/normal_6007b588252de.pdfIn PDF document text
    • https://cdn.sqhk.co/mewivupa/hUhbjh6/lasawepad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403271/normal_600b56ec6346d.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/nefomojuwet/rulifemufiwuwajobukuwukuf.pdfIn PDF document text
    • https://s3.amazonaws.com/gotitibekovi/android_studio_kotlin_version.pdfIn PDF document text
    • https://s3.amazonaws.com/zagapaxa/nodosifidorenud.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/warisu.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/xamavijejufulunofi.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/3d_decoupage_sheets_for_card_making_christmas.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/adverse_event_reporting_system.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_off0000cf66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF66 5284 bytes
SHA-256: 80aa9a261b34c48cbd1c960be366760619284126c954317a2926fd04887b1de1
font_01_sfnt_off0000e169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE169 10412 bytes
SHA-256: 887d06919829b4b7b898f9950a282b2a7cebbf7cd6352b833fd9cfadc2e928e5