Malicious PDF — malware analysis report

Static analysis result for SHA-256 6baf2d8ae4b194c6…

MALICIOUS

PDF

75.6 KB Created: 2021-07-16 07:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b93df3d668d26d6833a56a50865bf208 SHA-1: e4cef4946ec05e5279d07a78bb35f50d5c561ad2 SHA-256: 6baf2d8ae4b194c63522052555c1ccd5561d37f25b37ada6fab4bc9ee9eb6cb6
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by both ML classification and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, though many are marked benign, suggests an attempt to lure the user to external resources. The document body is heavily obfuscated and unreadable, preventing a more detailed analysis of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9163

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://feedproxy.google.com/~r/sq/ugae/~3/gOBB6uaVNRA/square?utm_term=find+slope+using+two+points
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60f0b369e7c782239581a16a/1626387305879/how_to_edit_file_free_online.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0a07726c97c3a7af6cbeb/1626382455768/podosusudiru.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee0b08eed6cd77ab5e1903/1626213128100/54966924604.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8d2b154da9c6696c591a2/1625871025116/south_african_beat_style_mp3_download.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f0c7159b6f23611951401d/1626392342061/87620309994.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e797895eabb22f35d6c211/1625790345228/70534052969.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8ec465fa2eb14b9091531/1625877574542/97398376233.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_off0000c6f7.bin
1f86cf64a94d4935ddbc0abba7bc208e504fd2cfae741c6810ede7c96af33947		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F7 10468 bytes
font_01_sfnt_off0000dea7.bin
c36dc799608df5c8c212ea84cd82879436e6d7f10697953215daad0d6090e557		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA7 16768 bytes
font_02_sfnt_off00010a5a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5A 16792 bytes

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