Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d3536d976dc7729…

MALICIOUS

PDF

70.7 KB Created: 2020-12-25 06:57:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a82c6d2107f95b91a62a1531d41ddcb4 SHA-1: 2e6ca53b76b86b3f5cf6319b4c9d9ac5320adfa0 SHA-256: 4d3536d976dc77291d1c691c891b71dbe9425388ba930a403a42d924d9624681
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'. This URL is presented in the context of a 'tank battle hack game download' lure, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection further support the malicious nature of this PDF. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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.
  • 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=tank+battle+hack+game+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4486523/normal_5fb2eacf604e4.pdfIn PDF document text
    • https://cdn.sqhk.co/wemofisejaf/hihhia7/tapemonanijebe.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/jmihggw/28543461335.pdfIn PDF document text
    • https://pafofenolaf.weebly.com/uploads/1/3/4/6/134668810/1205071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465694/normal_5fa32eefdd242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379474/normal_5f8db06cce86e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375083/normal_5f9c71c5b77a6.pdfIn PDF document text
    • https://tixovokibena.weebly.com/uploads/1/3/4/1/134109053/6917066.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387924/normal_5f8d8839e5057.pdfIn PDF document text
    • https://cdn.sqhk.co/forokuxodel/jfggFfu/74471912974.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000da0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0B 5324 bytes
SHA-256: 18f264fe60a851e5e7275cc495ead4e2ee49c3ccbc7a3f28f9826c9388ed8a38
font_01_sfnt_off0000ec11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC11 10108 bytes
SHA-256: dcc180eae3e181296aafe55c90baeec78afd62e791db584d256d7cd9bae2c269