Malicious PDF — malware analysis report

Static analysis result for SHA-256 e93d558f0c15f2a3…

MALICIOUS

PDF

71.6 KB Created: 2021-01-06 03:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 450c1a81b12aab226778da4a69a18152 SHA-1: eee02fb824d1418e224c92f45b2b0e174eb4f3f0 SHA-256: e93d558f0c15f2a35c742f305fd390d4abf6cf670c205dbe9b12fc1e0b549db8
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of an external URI pointing to 'traffking.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the external URL are strong indicators of a malicious document, likely used as a lure.

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://traffking.ru/aws?utm_term=beware+of+dogs+movie+free
    • https://cdn-cms.f-static.net/uploads/4413712/normal_5f96180d73771.pdf
    • https://cdn-cms.f-static.net/uploads/4383794/normal_5f9f945fd9e49.pdf
    • https://cdn.sqhk.co/vixukose/h6EcAie/nail_designs_coffin.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/rimepusox/28668630878.pdf
    • https://s3.amazonaws.com/bepukuba/y3_sqrt_x_graph.pdf
    • https://s3.amazonaws.com/zemigiduwagafu/22827528308.pdf
    • https://s3.amazonaws.com/damerirazib/9646334702.pdf
    • https://s3.amazonaws.com/lonozote/chrisette_michele_epiphany_album_zip.pdf
    • https://s3.amazonaws.com/bitajemisajoz/pacific_fitness_zuma.pdf
    • https://s3.amazonaws.com/degagaziv/faleki.pdf
    • https://s3.amazonaws.com/rowubunak/82411400892.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf18.bin
d0f929029b64e2a8935c8d032580ca92021f79948b7799d4db10b3cbae66410a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF18 4996 bytes
font_01_sfnt_off0000e035.bin
a80feb275c69b55679695a9a01d5dccf06b46257d6ef7c5fb372d514298d1ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE035 10732 bytes
font_02_sfnt_off000103e4.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103E4 4324 bytes

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