Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a384db470b34ca4…

MALICIOUS

PDF

144.7 KB Created: 2021-07-16 16:11:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f18c89c4f2ee3283c54930827aabbbd7 SHA-1: 7b0ccf1f3722254cff98151a9d9628d814639908 SHA-256: 9a384db470b34ca4a4ed5c77e4fd0743f378f2b4100ff7cdec8c2acd51ce5f16
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV with a signature indicating it is a phishing trojan. The PDF contains multiple embedded URLs, suggesting it is designed to redirect users to malicious sites or download further payloads. While no scripts were explicitly extracted, the presence of embedded URLs and the ClamAV detection strongly indicate a phishing or malicious content delivery attempt, likely initiated via a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.1031

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/razvivatel/yapz/~3/7R6buoffwiA/square?utm_term=asia+map+with+country+names+and+capitals+pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60efdda5fdf15601434911e4/1626332581442/nasogapijesivovokuxupemid.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee33e3df274736e0aaebf6/1626223588013/harry_potter_and_the_philosophers_stone_cheats.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60eca1de7a6a1626764b7106/1626120670204/92885513134.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ee5876462f394a1e44247e/1626232950827/translation_from_indonesian_to_english_free.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e959b9defa333328ac32af/1625905594044/download_song_aww_tera_happy_birthday.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ee6628e7148d06bc738a64/1626236456527/37028663381.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f11b92d1d8e65aae8644bf/1626413970889/8945190349.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a99b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A99B 16792 bytes
font_01_sfnt_off0001c1a8.bin
cb2d23ba59d6fab898ac4861c5a4e22643c1fe5c039578fe3c63b16aaee6607f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1C1A8 1800 bytes
font_02_sfnt_off0001ca20.bin
79abbff4de8ec89febfdd7b8e6e56ae1fbca6810d7e8e6800984b49ac9339e97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CA20 11164 bytes
font_03_sfnt_off0001e41e.bin
caa6f6860a6fbfb5b02628f65ef2d0e32b926d969ffab917f9d41861eba34999		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E41E 22748 bytes
font_04_sfnt_off00021d5e.bin
7d15b2d6d265aaca51dda18faee70a1b8fa9d95ed54cb111fb0895789092f9ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21D5E 16312 bytes

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