Malicious PDF — malware analysis report

Static analysis result for SHA-256 047c214e807e77b6…

MALICIOUS

PDF

75.3 KB Created: 2021-07-14 00:56:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 62e5db659a15c61f545f8a430c40e419 SHA-1: 5f76fe7731f28016df5771142c8506108d1bc2ac SHA-256: 047c214e807e77b637830e21ddc69404c83436bab15f980f3d4e162fb8ab7a27
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by ClamAV, specifically flagged as Pdf.Phishing.Trojan. The PDF contains an embedded URI that points to a URL which, despite being labeled as confirmed benign in the provided data, is associated with the malicious detection. The presence of this URI suggests an attempt to redirect the user to a phishing or malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.2489

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/razvivatel/yapz/~3/v-xubMviL4Y/square?utm_term=twittering+birds+never+fly+movie+watch+online+free
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ecc4fb8bd1c264bea743e4/1626129660013/checking_account_reconciliation.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60edec397ce58f02ed954772/1626205241976/76410975379.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_off0000c79e.bin
9b669e46caf81db30cfc0d5b3e4a040be4785384b0e34ff1e72b01b09afb711a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC79E 15484 bytes
font_01_sfnt_off0000ef21.bin
c86728eca94c78dee52f5037f12c8c1012c31881d5ccbfba328e22fb0671f30c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF21 11292 bytes
font_02_sfnt_off0001095c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1095C 16792 bytes

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