Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0aaeaf457c64d2b…

MALICIOUS

PDF

80.7 KB Created: 2021-07-13 20:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1df925e66ef42ead25d3a9bd0ace0ba8 SHA-1: af41af6c754232fb66fe4457840fbc895fcf4355 SHA-256: d0aaeaf457c64d2b6e87a2d702354b1313aaa68ea039415f21984745f1f5f388
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected by ClamAV as a phishing trojan. It contains multiple embedded URLs, one of which is flagged as an external URI. The presence of these URLs and the ClamAV detection strongly suggest a phishing or malicious payload delivery attempt. The PDF structure itself appears to be exploited, indicating a client-side execution vector.

Machine Learning

  • Nyx PDF Classifier clean score 0.1467

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/um1bUVUAM38/square?utm_term=seven+deadly+sins+signs+of+holy+war+episode+1
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec9364478ebe26bfc6d29d/1626116964376/bible_verse_god_answers_your_prayers.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60edb2282d9f403b5213a54b/1626190376624/free_download_to_to_word_converter.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_off0000d7d3.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D3 16792 bytes
font_01_sfnt_off0000efea.bin
094de8306247333f08b6837e7f7619650f035e58914b31ece8f2c0b9462d81c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEA 11072 bytes
font_02_sfnt_off0001098b.bin
be256aa074dd542a1acfd1df628d3a4a31198dc3a1ae26928d12dc661132f42a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1098B 17196 bytes

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