Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cd57e261fea2074…

MALICIOUS

PDF

77.5 KB Created: 2021-07-17 03:19:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 396dca5f66ed38805c411993721ce315 SHA-1: 6d62876ac9d4a853fecd8654437cdf1284e27740 SHA-256: 1cd57e261fea2074f7eff30764ca00186c0173334b54753e25c1f5fec00b9490
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, although many are marked as benign, suggests an attempt to lure the user to external resources. The PDF_URI heuristic firing points to a specific external URI that could be part of a phishing or exploit chain. No scripts were extracted, but the overall structure and detection suggest it's designed to exploit PDF vulnerabilities or trick users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9125

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/v-xubMviL4Y/square?utm_term=mph+to+meters+per+minute
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f2040f6dba2a0f08dd884a/1626473487537/fegote.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60eff6953015c64070c95964/1626338965531/reinventing_government.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ede42cafeffb59e67292b1/1626203180814/46543673423.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60eff32934da7a51e3f34f3e/1626338089906/93079807854.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ec9232a1b53f2c225edb3f/1626116659019/lolidux.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_off0000cbf9.bin
e19ebd90885dcaefe59f0a6426f57de0cd36d6b0eee6949f30c3500f28f4c870		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF9 10404 bytes
font_01_sfnt_off0000e354.bin
7d0d86f7ab47a0d43fc1ce88dd2b628d0bb6b3db994680648515613074ac5b00		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE354 17696 bytes
font_02_sfnt_off00011208.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11208 16792 bytes

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