Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74eb4c1274c8eb8…

MALICIOUS

PDF

62.1 KB Created: 2021-02-14 12:01:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 72ce7372ae1a93ae8d1146ff8722c16e SHA-1: 373c9284c51096c6a39a21586f46fe1e291c71a9 SHA-256: e74eb4c1274c8eb81d1e87a8be8be656da359a8da0c79234cf6f7e7b1bd5fd42
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://crophysi.ru/aws?utm_term=video+karaoke+lagu+cinta+luar+biasa In PDF document text
    • http://golomashvanna.xyz/28208590994k1uf6.pdfIn PDF document text
    • http://simultaneously.space/maxirafulonadopekuwunobctwd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382966/normal_6013c8f77c39f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468534/normal_5fe2291167740.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450504/normal_5ffcc79c19781.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410727/normal_5fe59a7984200.pdfIn PDF document text
    • http://ewop.space/423782669475e3tv.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/4KhgZ7x/9230761695.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuviju/dhbjcC5/transmission_coefficient_definition_physics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427267/normal_5fd3130c8c080.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/eibp7ij/dukixem.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/IeFFhc6/kodi_lee_songs.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/zesotat/99294426902.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/fexijagek.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/xegow.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_off0000b82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB82C 5276 bytes
SHA-256: 49a756973ebe41d48f76a0dfad82910b5feb87fb45a95b41050b32a329b269ef
font_01_sfnt_off0000ca2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA2D 9700 bytes
SHA-256: 08064fe858fa35027b3d72787fdf57a036064fc7256985000f42d5e926386da2