Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72dcd7f3e46cdf7…

MALICIOUS

PDF

72.2 KB Created: 2020-12-23 17:51:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 506c7e2462bd758077eca139fc66f35f SHA-1: d6f8a683dfe512d69424a66cf3f8495f0fcf5156 SHA-256: d72dcd7f3e46cdf7060577c93c743f843329fb519bafc6cd3064f12ff470d8ba
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. ML classification and ClamAV also flagged the file as malicious. The embedded URL is likely intended to lure the user to a phishing or malware distribution site, consistent with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/strik?utm_term=oakland+athletics+sonny+gray+trade
    • https://cdn.sqhk.co/gulijolane/eihjagg/69027135804.pdf
    • https://milorupubi.weebly.com/uploads/1/3/4/3/134317418/6527492.pdf
    • https://gawozigojuvapa.weebly.com/uploads/1/3/4/8/134896601/tagunozarukux-zozolev-xupiturum-darepaxiv.pdf
    • https://cdn.sqhk.co/tuwagezo/hc59wjh/weather_app_icon_purple.pdf
    • https://static.s123-cdn-static.com/uploads/4485005/normal_5fc93f1492e1f.pdf
    • https://cdn-cms.f-static.net/uploads/4481993/normal_5fb729fa06e14.pdf
    • https://static.s123-cdn-static.com/uploads/4380086/normal_5fc480e040726.pdf
    • https://cdn-cms.f-static.net/uploads/4369645/normal_5f9b5a0114843.pdf
    • https://cdn.sqhk.co/kuvapipitol/dgijelN/suzuki_boulevard_c90_service_manual.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/babetafaperaxov/balance_sheet_assertions.pdf
    • https://s3.amazonaws.com/tulosa/appendix_2_form_for_uk_settlement_visa.pdf
    • https://s3.amazonaws.com/wumodukubaru/tigofaxujimusevuv.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd25.bin
e4d91818f1e8b681208f7fd9a85cb67e46d24f35c2c704eaadb16678ac08a9c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD25 5396 bytes
font_01_sfnt_off0000ef7f.bin
bee59c2ea04eef2efb7836bc1b2a70dfb4278ae9f5fd60b5f32f394bb1a7a703		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7F 10812 bytes

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