Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee5ce7e50e3b92f…

MALICIOUS

PDF

80.9 KB Created: 2021-07-16 13:17:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5516f9a4f0f05dca92069f5a01132788 SHA-1: edc7a5a861bdfbaf124845e9b81e8a0f923d215e SHA-256: dee5ce7e50e3b92fa20131dfeddf343ca92db0275b8eab45210a57ecc96ad2e7
96 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. The presence of embedded URLs, though many are confirmed benign, suggests an attempt to lure the user to external resources. The file's structure and heuristic firings indicate it is designed to exploit vulnerabilities or trick the user into executing malicious code, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6166

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/~3/4aHNpQc2m6I/square?utm_term=deep+house+quotes
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f13aec2c92ee1ddddea9cc/1626421996431/bolunemizeviwoxemusemipi.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ed7c3667dd777ebfc1f99d/1626176566697/major_characters_in_things_fall_apart.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec918d90a3fc49531a743a/1626116493847/how_to_find_a_sentence_in_a.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8feb5338e9546e47c6d8/1626116075605/kopoxulizix.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_off0000dcf1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCF1 16792 bytes
font_01_sfnt_off0000f508.bin
888162cc80f4ac2959e4be4910f72a88e0e6f44369f9e368430c397d786ba84e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF508 10092 bytes
font_02_sfnt_off00010baf.bin
c465c809eb083a85da990fa7dbcafc3e3cf1be78df89d159896c0ce12e0e779e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BAF 17036 bytes

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