Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cce777dfc4cee02…

MALICIOUS

PDF

79.7 KB Created: 2021-07-13 16:39:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 723b26b792c97d00044033bdab222826 SHA-1: 1123f100cc84cf127ca7652507976b63f5dc1962 SHA-256: 4cce777dfc4cee02cb8da5acec26c3c2e3bd56c7f0862356394548f836443d8f
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 an embedded URI pointing to a suspicious URL, which is a common tactic for phishing or distributing further malware. Although no scripts were explicitly extracted, the presence of an embedded URI suggests an attempt to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6166

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/XMoLd4EPXkg/square?utm_term=natural+beauty+indian+song+download+mp3
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60ec77bbf89f8e700bf6460a/1626109883254/how_high_should_golf_tee_be_for_driver.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7c526d93aeb546a134d25/1625802022979/porosity_meaning_in_science.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ecfb1b6ebf0d48ea89fcd7/1626143515732/vasokegiduxuz.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8ee87e51f1f218d67b6eb/1625878151624/marketing_and_sales_strategy.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_off0000d4cd.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4CD 16792 bytes
font_01_sfnt_off0000ece4.bin
c095a310f003645548d35d36ea70bd2b233d447a11a907a2007e06d742aea406		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECE4 11324 bytes
font_02_sfnt_off0001072e.bin
76b5d1a5a4f434ad21bf87d6e8260a2ddcd6330ddc27721e4840d34f6268c109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1072E 16852 bytes

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