Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ec49e0369cbc9f…

MALICIOUS

PDF

82.1 KB Created: 2021-07-13 23:25:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ec0496bc4b8369279e60617cfb5eebce SHA-1: 2af5c72c4f3106997cf31847e9a89134de77ef05 SHA-256: d5ec49e0369cbc9f9038c120fb0f6e102cc805ed28640184b7a43046331cb30a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. The PDF contains embedded URLs that likely lead to malicious content. 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 sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5948

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/iXsW93xxTQA/square?utm_term=pursuit+in+english
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7a46adbb92d34f5abb4cc/1625793642367/64257049835.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e79e4081471576eae9548f/1625792064506/6314718701.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edd1dfafeffb59e6709b32/1626198495900/53236638387.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e817aa7e45264421fb107e/1625823146653/michigan_state_id_number_format.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60ecb0e4ad57c82336578b5c/1626124516604/kagifivisaloverodaw.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c571.bin
540c87f7ae8addccf2206e71927cf75c1a11edca43fc5760ae1dbe8dde8b8517		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC571 10204 bytes
font_01_sfnt_off0000dc3d.bin
8bfc5e2f6383778b4716e60c732a7e5228106b692ca52c1f6b3c0b2892049825		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3D 16060 bytes
font_02_sfnt_off0000f14c.bin
16c7e3837093a64cc5b34dcbdd7c78211f64b8184f62ef5f16126969453d5240		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF14C 18860 bytes
font_03_sfnt_off0001231f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1231F 16792 bytes

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