Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06c747c3e82b4b8…

MALICIOUS

PDF

74.9 KB Created: 2021-07-18 10:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: af99b0f6eb7433c2d0172410dc3f44ab SHA-1: a7fc3c47150e751aeff98079b9e6eeb2d6599c4c SHA-256: e06c747c3e82b4b8d3bf63d629636622258600200036baf2619eadcc0fb6b836
106 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was identified as malicious by ClamAV with the signature Pdf.Phishing.Trojan-d2568dad23a94d95. Static analysis revealed heuristics indicating an advance-fee scam lure, consistent with phishing documents. Although no scripts were extracted, the document's structure and embedded URLs suggest it is designed to deceive the user, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.1751

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/iXsW93xxTQA/square?utm_term=10+lines+on+my+favourite+teacher+in+english
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e955e12210ba6bce13ab79/1625904610049/rozikekejosofefar.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_off0000c349.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC349 16792 bytes
font_01_sfnt_off0000db60.bin
853bbb7a823da9f04491cbabd6bb4b6d89861694e37e46ba092ba3d317fb4d26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB60 11140 bytes
font_02_sfnt_off0000f54d.bin
2a5d9e1f48c40e58f8f25221e13dec2310a46b42818b6f0943711d7264f1c179		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF54D 16428 bytes

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