Malicious PDF — malware analysis report

Static analysis result for SHA-256 09dddbc8218fd3dd…

MALICIOUS

PDF

80.8 KB Created: 2021-07-21 04:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 57b4805e3c6f9ce4b0d920a39442051a SHA-1: f35b7fa7594c186f7a4c55996861af3681693bb9 SHA-256: 09dddbc8218fd3ddb7136a0916689334d87c751905538f04816bc3b15997bc95
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains an embedded URI pointing to a Squarespace domain, which is likely used to host a malicious payload or redirect to a phishing site. No scripts were extracted, but the presence of an external URI suggests an attempt to download or link to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8511

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/v-xubMviL4Y/square?utm_term=such+a+lovely
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ed33c3094bb21e999257c5/1626158020191/torudavubuvubeguxin.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f411281ad9bf1c32bb0bec/1626607912490/1983_to_2020_inflation.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f33d39c2d40e67ec09ef5d/1626553657260/save_from_jpg_to.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f45781c5d9e6782ceb142e/1626625921983/54929318579.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ee54c82d09e34b72a1b385/1626232008960/high_school_chemistry_review.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60edb2ff5860d606f4848100/1626190591528/protection_warrior_gear.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_off0000dd2d.bin
630a08040624824c32d137395c26c6eca74bd5b627938f7174171ee4f5c9667e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2D 16696 bytes
font_01_sfnt_off000108a3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108A3 16792 bytes
font_02_sfnt_off000120ba.bin
8e99e164ec5e530067bad359b2c294a6a4519042c0591de8758daadd0d7b93ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120BA 10120 bytes

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