Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9751323c9afd097…

MALICIOUS

PDF

80.1 KB Created: 2021-07-16 00:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 12fde84869fa4d3226e7e4720d15d191 SHA-1: fd635c773dad361b17b5233d5cb9ca1c7f2b441a SHA-256: f9751323c9afd097c49669fa6ea774d8790756722fe076f13a82eb9f86fc5efe
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 embedded URLs that likely lead to malicious content or phishing sites. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit vulnerabilities or trick users into visiting external resources.

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/eoPDrVzwpx0/square?utm_term=retroverted+uterus+early+pregnancy+symptoms
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e7c3384261ba79805ff9b8/1625801528101/lolagifulefufujomeki.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e7d9a97e45264421f8b03d/1625807273705/how_to_copy_select_pages_from.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60edf334f6d8087912c0ab8b/1626207028328/plastic_surgery_after_mastectomy.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60efe9f8fdf156014349911b/1626335737044/80054448380.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e932236e267257943b6967/1625895459723/64738766151.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_off0000d5e3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E3 16792 bytes
font_01_sfnt_off0000edf5.bin
7d67c26358647f8578bd524edc1564947dacda24c59f05963e474abb514c2a4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF5 16980 bytes
font_02_sfnt_off00011a8e.bin
1d59f8d3d249f0954e4a43108d98726bfa14be07de2f2f8e0c052df014e8b6b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A8E 11088 bytes

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