Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce9319dae121ad3…

MALICIOUS

PDF

76.4 KB Created: 2021-02-11 14:17:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d1c49f4419244f10318dc25365376854 SHA-1: af1cb0d07af60230b740c720eeccc79b2ada0875 SHA-256: 2ce9319dae121ad3750e8621929130ff5cbf46569f8107855fc5968c551f029a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/aws?utm_term=grammar+worksheet+suffix+able PDF link annotation
    • http://noverst.xyz/multiman_4.66_download_ps3g9bn9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421637/normal_5ff07ff1be23e.pdfIn PDF document text
    • https://cdn.sqhk.co/jagakutojut/hajiigS/games_war_wallpaper_hd_1080p.pdfIn PDF document text
    • http://prognoz-football.club/paper_io_2_cheats_voodoo_debug_2018fmqi2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386849/normal_5fcfea80a1684.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426813/normal_5ff142bda73a3.pdfIn PDF document text
    • https://cdn.sqhk.co/madilaxetevo/ijdC6Wt/nafigefekemujuju.pdfIn PDF document text
    • https://cdn.sqhk.co/jibenapola/sjcOgdW/android_tv_box_launcher_apk_download.pdfIn PDF document text
    • https://bajumavo.weebly.com/uploads/1/3/4/4/134486103/vubusere.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414860/normal_600387be33558.pdfIn PDF document text
    • http://nudistoff.club/fundamental_accounting_principles_bookxuhdv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zunizififuve.epizy.com/statin_guidelines_esc.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/43324865540.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/81274494705.pdfIn PDF document text
    • https://s3.amazonaws.com/julaxel/pirezulo.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_off0000ec1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC1F 5400 bytes
SHA-256: 6ac52916853c0e5871b7f458df995786305ce6c2513737b5805381bca5b1afe1
font_01_sfnt_off0000fe6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6F 11292 bytes
SHA-256: 8a52ba0356f8fad0ff93d8d14df914624b9f4254251d2aac6c32b71ef9d36ea6