Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e3115e756e11dc5…

MALICIOUS

PDF

80.5 KB Created: 2021-07-13 22:12:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 647dec8a1454048167b9d851e5cb54d7 SHA-1: e432fb97e5504fe5dcfdfe1e4e375fbae2da75d5 SHA-256: 2e3115e756e11dc56f40ad69bf09b522249792dd5caa67be8b5598cee4837ad3
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a phishing and trojan detection. It contains embedded URIs that point to external resources, suggesting an attempt to redirect the user to malicious sites. While the document body is heavily obfuscated and unreadable, the presence of these URIs and the ClamAV detection strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.1467

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/XMoLd4EPXkg/square?utm_term=current+space+missions+2020
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e87dde9656df6e24627d7e/1625849311033/kuloj.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ec857cad1bf7105ccc10b6/1626113404104/nearest_guest_house_from_my_location.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_off0000d621.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD621 16792 bytes
font_01_sfnt_off0000ee33.bin
a5e3fe15d6ea8ab93d965a530f65c9414db95c41f6ddb3614e587587f6dcc725		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE33 17856 bytes
font_02_sfnt_off00011d23.bin
8d26c728fd09170f04643e93453207db5e66baa738014a5da9ed07ffeb2bb993		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D23 10860 bytes

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