Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb8ab42f806cd0e…

MALICIOUS

PDF

83.9 KB Created: 2021-07-16 02:03:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b7b005aa1251eace75611116c6a5ecb3 SHA-1: 26a970cf355616498157d998644ffc989035577f SHA-256: 8eb8ab42f806cd0e5684fe7c62c3d5513a2e68c3bfc9fad6871988a86c97c9a9
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 PDF contains an embedded URI pointing to a Squarespace domain, which is often used to host phishing lures. While the document body is heavily obfuscated and unreadable, the presence of external URIs and the malware detection strongly suggest a phishing or credential harvesting attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8298

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/~3/4P1vZUbBa90/square?utm_term=local+charities+for+christmas
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec8d16bcf8be39b505f1bf/1626115350809/pixagisudukabo.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f0ae71d33318057715be9a/1626386033797/68640706060.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee5fedb1dcdf258da9f43b/1626234861555/2200_calorie_meal_plan_high_protein.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f003606611482e0a90f42d/1626342240137/a_million_ways_to_die_in_the_west_bloopers.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e918bb787dde1a90adb917/1625888955599/most_expensive_cruise_ship_suite.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_off0000e92e.bin
8d3de6927ab56c90a30ab5d8ebdab80a80286fe886e9fc4d43e32c31004e7e3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE92E 16572 bytes
font_01_sfnt_off00011437.bin
298582a7b9622a3ad2bf68f17105f8fba5ed4f4dc71ab37d17a31246a9a61978		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11437 10452 bytes
font_02_sfnt_off00012bf4.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF4 16792 bytes

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