Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca4922c47891cf0e…

MALICIOUS

PDF

85.1 KB Created: 2021-07-16 01:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 53882bccd64b9f334b72ffe8401320a4 SHA-1: 6131f66dac74d2e6d36836b9fad2a0dec2c93abc SHA-256: ca4922c47891cf0ed39ad72d2566fd0cca9c1f15aa4efc9933c39f07b7bab552
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. No scripts were extracted, but the presence of an external URI strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9526

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://philabc.ru/square?utm_term=sermon+about+peace+of+mind
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee8b8d796bb0196c65febd/1626246030105/firajixewadosafobibepupe.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60edfc51c6126f45c3e5330a/1626209361167/70_centimeters_to_inches.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec7de4fd54eb0708254b20/1626111460866/financial_accounting_theory_7th_edition.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f0ac8470fd7f1334b5e898/1626385540698/bixuxujo.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e92952f492d21a0f6b294a/1625893202131/13558278430.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f007bf3015c64070ca1d38/1626343359366/zejozoregifafumab.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee045677fc8e778b5b60b2/1626211414430/zuxubozezelez.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60edb02b03cb9e0b597ae027/1626189867126/rolopefuxen.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_off0000ea1b.bin
9204675880f58286e4b03a3b6f78cb4f0fe4487bcd4409ce9bab25de874d3531		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1B 10880 bytes
font_01_sfnt_off0001030e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1030E 16792 bytes
font_02_sfnt_off00011b20.bin
8fdb5f71ce32410502cf54183e194bdacf1c1f8db20e1ac7be01e5783d7fe9b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B20 17356 bytes

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