Malicious PDF — malware analysis report

Static analysis result for SHA-256 7950e0c60caf325e…

MALICIOUS

PDF

74.4 KB Created: 2021-07-19 10:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 246e6b464ff255951378d47dad710e59 SHA-1: 8a89792f53f8dc2536dd2b5d7b493f74ea6e9959 SHA-256: 7950e0c60caf325eabb3c0f945d7b06046d15804cb53224295cee63432c58953
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a signature indicating it is a phishing trojan. It contains embedded URLs, one of which is disguised as a download link for a sample pack, suggesting a social engineering lure. Although no scripts were explicitly extracted, the PDF structure and the presence of embedded URIs indicate potential for malicious actions, likely involving the redirection of the user to a malicious site or the download of further payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2592

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/iCUEKX862tE/square?utm_term=amapiano+sample+pack+2020+download
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ecac4d0f7d8d50062fb0e8/1626123341906/yoshi_island_ds_rom_download.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f05ca7e74ffe73c20373cb/1626365095674/the_office_season_4_episode_4_minute_35.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_off0000bfee.bin
93f8929104110c23e839f84f4a5ef7698631b7546681816fb8b2545638d0db2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFEE 10880 bytes
font_01_sfnt_off0000d923.bin
a67102bb7345b496b810d9c09955568f3914b6a3d514296b1053fa020d4b4fae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD923 17036 bytes
font_02_sfnt_off000105bb.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105BB 16792 bytes

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