Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e586a904e1e4cd…

MALICIOUS

PDF

72.8 KB Created: 2021-02-07 19:38:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 002ce358d8bcb59f7c57ebd2cc2cd14b SHA-1: 6778ebe12a64da0af625faa0f5086b12b8cada3e SHA-256: e9e586a904e1e4cd34ebd75b5e6e92dd9014503261ff10a55db9c8e8679a7d3a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=home+design+3d+crack+apk In PDF document text
    • https://static.s123-cdn-static.com/uploads/4464314/normal_5ff460f48b108.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459029/normal_600697a934eb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409606/normal_5fd15247cb28c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481825/normal_60027cf154608.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414695/normal_5fe387fe99726.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/ehBib73/download_game_survive_wilderness_survival_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446377/normal_601c607cad712.pdfIn PDF document text
    • https://cdn.sqhk.co/laxefotogulo/XcijheQ/bouncy_hills_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xasomegupur/hjcphch/ninja_stickman_fight.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421339/normal_600de49228143.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/nodetuxapabara/xipumugupoxevukar.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/cm_browser_android_2._3._6.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/canada_visa_forms_online.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/30578245097.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/bitlocker_aes_128_vs_256_performance.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_off0000e092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE092 5552 bytes
SHA-256: 265a4ee39c2bb9e89fda75817c7e021891a7e9ecad2742b3fef59696d6b8172a
font_01_sfnt_off0000f359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF359 10312 bytes
SHA-256: ebc1fbd73d826f8fa5538e51c2a6c73d3c74b15ae327a5de76c2ed07ec65bdea