Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eff689d79aaa369…

MALICIOUS

PDF

75.1 KB Created: 2020-12-30 01:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d5aa2367d5316bcd413ff280d286404a SHA-1: 7c72c4c2116ce62d24cb30ce81293653fde39042 SHA-256: 8eff689d79aaa36998debd884d664a4035ccbdfb5099e46a74491bcab028bb43
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain related to car racing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://trafficel.ru/strik?utm_term=ramp+car+racing+stunts+fast+car+driving+adventures PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4490140/normal_5fc9f70347367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477369/normal_5fe83a6a9f876.pdfIn PDF document text
    • https://rotiwoluxifu.weebly.com/uploads/1/3/4/5/134525243/rusogototavetaguwu.pdfIn PDF document text
    • https://duzuxaxopukuka.weebly.com/uploads/1/3/4/6/134615532/8039054.pdfIn PDF document text
    • https://vebaxifi.weebly.com/uploads/1/3/4/3/134360040/barakuri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417526/normal_5fbca06dd2c18.pdfIn PDF document text
    • https://rinuvigilositu.weebly.com/uploads/1/3/4/4/134463450/budaral-gonofi-duwitup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386074/normal_5fcacba1420fe.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/jakujakula/26631462152.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/zevumawowojodarigazoxeveb.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_off0000e809.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE809 5512 bytes
SHA-256: 22c14f8115030722856a3e389fe4ef09dadb234831c182a254c98a8eec11bd6c
font_01_sfnt_off0000fabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABB 10800 bytes
SHA-256: 9409fff2b04321f284b5037739fd28c15771f467bfcee2c353a7e42a26d47712

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