Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ae83f961bb8ded…

MALICIOUS

PDF

79.3 KB Created: 2021-07-17 14:24:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f11b9394e1521ba8d014d8496d32df7a SHA-1: 131f04ec941671e7ad77b0b20c1b2c0a3bffc442 SHA-256: 07ae83f961bb8dedc73e59eed77cae3cf46a36c777236d9e955d915f695c8a45
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite some being marked as benign, suggests a potential phishing or credential harvesting attempt. The PDF structure and embedded artifacts do not provide specific script execution details, but the overall context points towards a malicious document designed to lure users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6556

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/XMoLd4EPXkg/square?utm_term=list+of+world%27s+largest+companies+by+market+cap
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8419aca800d6833de64de/1625833882249/final_cut_pro_serial_number.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec9103934d360eb2895f6f/1626116355211/only_the_paranoid_survive_ebook_free_download.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ee5244ab0cb8743be5e32b/1626231364615/foods_that_contain_emulsifiers.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_off0000d3d6.bin
8fcee8396ef639620c534824568da7dc7fb1475cbe704158496b2e386a203d65		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D6 16472 bytes
font_01_sfnt_off0000fe88.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE88 16792 bytes
font_02_sfnt_off0001169f.bin
51734be276b25160f56b7ee1d0bf56b772cd8c73099a2a37bad520b26138c74f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1169F 11384 bytes

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