Malicious PDF — malware analysis report

Static analysis result for SHA-256 2510628757108600…

MALICIOUS

PDF

78.2 KB Created: 2021-07-13 15:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 83da33c1e269999c2a2b0b7fbfdf1800 SHA-1: 386fe8b7b091a081f59b31c89304c3a2a1db1b69 SHA-256: 2510628757108600a6ebb28552b878a0bb2224649af257d4a4337e7fceb10d36
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 an attempt to lure users to external resources. The PDF structure and heuristics point towards a phishing or malware distribution vector, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6665

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/X6hrLWyzjlw/square?utm_term=words+that+rhyme+with+plan
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec8e704f558d0bf39c906d/1626115696257/sixoza.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e79ca9f29cd6423db0dd01/1625791657903/33010244868.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ec98d9cd1a1204f6c9f7a7/1626118362024/nikkei_index_today.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_off0000cf75.bin
bcd706d90f3f84ac0ff6373d8fe501266a21944f85207725f8c24866c9409117		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF75 16560 bytes
font_01_sfnt_off0000faab.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAAB 16792 bytes
font_02_sfnt_off000112c2.bin
e33afddd26e533188692b3d828e4de9a4ee10591ff8b3ac42865cbd3667b141e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112C2 10852 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.