Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2dba7280fd5512c…

MALICIOUS

PDF

73.2 KB Created: 2020-12-28 18:01:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65f3c152833871063d90afde1c67f1ea SHA-1: 79549048fc582264c0240955564b6c96411f527c SHA-256: d2dba7280fd5512c1830ce2ed68872ab5aa78a41bb49469bfebd7fe1aa3e7e71
104 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature and an ML classifier, indicating a phishing or trojan payload. The embedded URL `https://trafftec.ru/aws?utm_term=standard+grievance+procedure+template` is a strong indicator of malicious intent, likely serving as a lure for further compromise. The document body, though heavily obfuscated, contains text suggesting a template, which is a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafftec.ru/aws?utm_term=standard+grievance+procedure+template
    • https://vagonegasix.weebly.com/uploads/1/3/1/4/131482995/bd0cb1a54.pdf
    • https://cdn-cms.f-static.net/uploads/4417418/normal_5faddf41f138e.pdf
    • https://static.s123-cdn-static.com/uploads/4473062/normal_5fc412236a989.pdf
    • https://static.s123-cdn-static.com/uploads/4419847/normal_5fe342264923c.pdf
    • https://pegiromilu.weebly.com/uploads/1/3/4/6/134683304/89f5d1d6cf6.pdf
    • https://static.s123-cdn-static.com/uploads/4372735/normal_5fe024b6703b0.pdf
    • https://cdn-cms.f-static.net/uploads/4420018/normal_5f9d6373eb249.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/napisakaluja/xozudesifimisegepixuramu.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_off0000e2da.bin
1bc1b9f8dc48ac464e866ff768fa516a2981e70adc34217a8a1b962bbd61eaa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DA 5376 bytes
font_01_sfnt_off0000f517.bin
9c2fada3688ec4dd1a12e71645bf67abc658de52545fd049f3ed581e79509355		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF517 10196 bytes

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