Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9fad495125cfc68…

MALICIOUS

PDF

75.8 KB Created: 2021-07-18 17:39:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: e245fb39e894d721ac06e0206dc16cf6 SHA-1: 8f519c89474ef7d4ebea3e8ce5542e896779c43c SHA-256: e9fad495125cfc68d77db606d43b091bae1ff1c39c8bc118442ee4800bff2e37
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a 'Pdf.Phishing.Trojan' signature. It contains embedded URLs, one of which is presented in a way that suggests a phishing lure, masquerading as a news link. Although no scripts were extracted, the presence of embedded URLs and the phishing classification indicate an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1538

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/iCUEKX862tE/square?utm_term=us+stocks+down+today PDF link annotation
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f26b2136db64625196e6b6/1626499873306/how_to_quote_a_quote_from_an_article.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC782 17208 bytes
SHA-256: 3ed15533faabfda32493aee26e69446060dfcdd29bc5d6326c8475f6d5f96130
font_01_sfnt_off0000f485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF485 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C9C 10292 bytes
SHA-256: 16a2cb10751981a65572b1d5d2accf33f5b761949a430b5a1c997b085b999430

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