Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f2a7553820365b2…

MALICIOUS

PDF

79.7 KB Created: 2021-07-13 16:38:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7d41c2c2d0956439ff22b4781ac974b6 SHA-1: 1bd577d30427d1ad87cacfab11aa90e5e1fe3564 SHA-256: 0f2a7553820365b2150b26c024f6cdbd29c39fd40e47b89877f94457b40ae334
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The PDF_URI heuristic identified an external URL, suggesting the document's purpose is to redirect the user to a potentially harmful website. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection profile strongly suggest a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8584

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/ZFaGRQ6RLlg/square?utm_term=roof+without+tiles
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eca8973631fd4ab819d2d3/1626122391753/wozisolipezalujuxaxotub.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ed882702ab3a569c458e02/1626179624068/70926552823.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ecb4ff104bab176fa8c1c3/1626125567674/over_producing_saliva_at_night.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e86216de31705e2e6e2e16/1625842198233/jitudefejanup.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e76a504fae2d22fbfe5716/1625778768606/16407285278.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e81e6c1873c46ac93c4828/1625824876179/out_here_on_my_own_musical.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7e07e45e16b3be7ea143e/1625809022606/59785983497.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_off0000d2dc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DC 16792 bytes
font_01_sfnt_off0000eaf3.bin
2497af483e367710f33dcca96b5a35d9c7ff0f0e040c32259cf2fb90c041b81c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF3 10176 bytes
font_02_sfnt_off000101f3.bin
ba6526f0fbf9f01ada8703b6f9e50eecff1d2d6e74d4c82228fe90c408954145		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101F3 18100 bytes

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