Malicious PDF — malware analysis report

Static analysis result for SHA-256 95afc0fbdc6029cd…

MALICIOUS

PDF

106.5 KB Created: 2021-07-17 12:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: facf3ccf68eb41ff334939e01cbabfe3 SHA-1: 0b6bb0cb1fcd6275c75373d339afd645b3874105 SHA-256: 95afc0fbdc6029cdc8a7e016d6efebdcd1536a9af9b72f0ec7ce9196bf600044
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is identified as malicious by ML classifiers and ClamAV, with a heuristic indicating an external URI. The embedded URL, while flagged as benign by the analysis, points to content related to 'roblox the wild west aimbot', suggesting a lure for gamers. The PDF structure and the presence of embedded fonts are common in exploit-laden documents. The primary attack vector is likely spearphishing, leading to exploitation of a PDF vulnerability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5412

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://feedproxy.google.com/~r/sq/ugae/~3/CHqDoFjlE84/square?utm_term=roblox+the+wild+west+aimbot
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f206dbfa3a010ccfc04370/1626474204201/parts_of_uk.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60eca126831aaf5e928cff46/1626120486331/how_to_frame_a_window_in_existing_wall.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60e8d37cbf13e579204bae02/1625871228164/snow_leopard_in_snow.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ee74cbb82b3047686391e7/1626240204042/the_best_career_objective.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013a29.bin
d178d2574151ae33aabe83ef7bd933cbc18bc76c22e677220c4857c7d1f53698		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A29 18708 bytes
font_01_sfnt_off00016c3f.bin
d5108dc2a88777c5ff690f0ae30926bfe67f48ce03c3f263b9b7f4c4391e3a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C3F 10684 bytes
font_02_sfnt_off000184da.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x184DA 16792 bytes

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