Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca59b6031704644…

MALICIOUS

PDF

77.6 KB Created: 2020-12-02 14:07:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8492f7cd42f679b828d9702fc5ce904e SHA-1: 929d8448e8d9e0446307da0603a5d7698ff0ebbc SHA-256: 0ca59b60317046442acaabba22a02c135acb9d7cc17c794ff2eda13c6351f4a3
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be part of a lure, possibly a quiz or informational question, to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=a+bus+engine+transfers+chemical+potential+energy+into+____+so+that+the+bus+moves
    • https://tevuvusit.weebly.com/uploads/1/3/4/3/134373155/vizekureme.pdf
    • https://cdn-cms.f-static.net/uploads/4413714/normal_5fad7ba8d890a.pdf
    • https://cdn-cms.f-static.net/uploads/4481282/normal_5fa9d3c7156ae.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/vavapekadoliti/gta_5_online_hack_tool.pdf
    • https://s3.amazonaws.com/tuzamada/bose_qc20_apple_vs_android.pdf
    • https://s3.amazonaws.com/tezofuretejom/approach_control_radar_images.pdf
    • https://uploads.strikinglycdn.com/files/ee450f77-afcf-4cf3-940a-b30cf845cb71/ootp_manual_guide.pdf
    • https://s3.amazonaws.com/gozifep/99448649593.pdf
    • https://uploads.strikinglycdn.com/files/f77fff74-4ea6-40f1-a459-71a4806b86a0/care_bears_characters_tv_tropes.pdf
    • https://s3.amazonaws.com/fajonubinomeder/compare_numbers_worksheet_kindergarten.pdf
    • https://s3.amazonaws.com/veraxawewib/alphabet_worksheets_preschool.pdf
    • https://uploads.strikinglycdn.com/files/e1fb4ee0-4052-4517-9d55-e3da358dafde/loroxulejimanimaditenaxu.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_off0000e3dd.bin
b6068f51ac9ed05099a3454ec9933cb1b438268cdee443135ec5e341747d5c17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DD 5632 bytes
font_01_sfnt_off0000f6e1.bin
0cefb1ed77020ae103906a45b2b66504d3c6770452de0e52db8b8f7c26453cf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E1 10328 bytes
font_02_sfnt_off00011a4c.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A4C 4324 bytes

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