Malicious PDF — malware analysis report

Static analysis result for SHA-256 865786e5dbe467e7…

MALICIOUS

PDF

71.1 KB Created: 2020-11-25 08:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3d052a8c7b9d93161470c7819f65eee SHA-1: 4ea9efebe9955c5f70ef9636daa4d756e651d5c3 SHA-256: 865786e5dbe467e725e6c6d4e8f1aaa9398f809158fcc47bce9d7b5fae5a80d5
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafficel.ru/strik?utm_term=american+trading+company', which is a strong indicator of a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains fragments that might relate to 'American trading company', suggesting a potential lure.

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
  • 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=american+trading+company
    • https://cdn-cms.f-static.net/uploads/4378410/normal_5fb9794617a43.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/juxatop/83628072400.pdf
    • https://uploads.strikinglycdn.com/files/9c305234-1346-44eb-8896-dabb41f7337c/87093549949.pdf
    • https://s3.amazonaws.com/bitizopovopaso/cartilha_meio_ambiente_infantil.pdf
    • https://s3.amazonaws.com/mokuwanibof/scratch_coding_tutorial.pdf
    • https://s3.amazonaws.com/vexosafugunu/71437837812.pdf
    • https://s3.amazonaws.com/kavitokolezub/18087802104.pdf
    • https://s3.amazonaws.com/gowebabuxogiro/92942530125.pdf
    • https://s3.amazonaws.com/tipikaxe/47027023650.pdf
    • https://uploads.strikinglycdn.com/files/b2d34d2c-231d-4b43-a942-dcb69d2de697/50211260753.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_off0000d850.bin
fcccee840541c442a6760129ff98f36834be49e7d349b903d6205b2151e98655		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD850 5276 bytes
font_01_sfnt_off0000ea30.bin
90b42493656cf385a798d2202545bc0546af48c68ff162f016fad10b4f436743		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA30 11068 bytes

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