Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1bd148e8dab6d1c…

MALICIOUS

PDF

70.5 KB Created: 2020-11-24 08:06:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a60d0e6e33a3ba7dda4ac4fa48f8fd7 SHA-1: 590167d0bdad346b88fdc4cc788e5ee911f0e2d4 SHA-256: e1bd148e8dab6d1c54f4e8655bd2fe1506df2656193d8a7087fb66cee5b487cd
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, with a high risk score. It contains an embedded URI pointing to 'https://trafficel.ru/123?utm_term=define+implied+powers+principle', suggesting a phishing or malware distribution attempt. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, but the presence of external URLs indicates a malicious intent to redirect the user to a potentially harmful site.

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/123?utm_term=define+implied+powers+principle
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/babfa.pdf
    • https://cdn-cms.f-static.net/uploads/4454545/normal_5fa90603cca05.pdf
    • https://cdn-cms.f-static.net/uploads/4386337/normal_5f8eb08c66e40.pdf
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5fab4ffd96893.pdf
    • https://gegakavawedo.weebly.com/uploads/1/3/4/2/134265750/wefamod-livemulajuroba-rikisitazoxali.pdf
    • https://wubobuxidozexe.weebly.com/uploads/1/3/4/3/134322977/f334a.pdf
    • https://vugilove.weebly.com/uploads/1/3/4/2/134234765/pemasejige-xuwapomosivo-jujonineb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/fdc56593-5757-459d-8aef-1b6c1082c9f1/17081821653.pdf
    • https://s3.amazonaws.com/davawina/pune_ring_road_map_2018.pdf
    • https://s3.amazonaws.com/henghuili-files2/31442714469.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_off0000cc05.bin
1538af7db7f17b21a07b1ff6aab79eb6de49b730e8dfa7d6f515b3f478e8f2b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC05 4892 bytes
font_01_sfnt_off0000dc99.bin
97c56d24f5d020ee9e31e7b5fcfedfa1be69c37f36ecca7f415c2542364e8ad7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC99 10144 bytes
font_02_sfnt_off0000ff68.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF68 4324 bytes

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