Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba4c62ace4a3d12…

MALICIOUS

PDF

79.1 KB Created: 2021-07-13 21:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bc10ef23b73914b03524cb5500e3e636 SHA-1: c48b99e4e82258d2554db1c702e001983a25c8ef SHA-256: bba4c62ace4a3d12294e44b325835fb66164aa7f0b8241b90a00d0cb2716b293
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ClamAV and an ML classifier as malicious. Heuristics indicate it contains an advance-fee scam lure, presenting language associated with lotteries and parcel delivery to deceive the user. The embedded URL points to a suspicious domain, likely serving as a lure or part of the scam infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6198

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://laborke.ru/square?utm_term=kent+christmas+prophecy+2020
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e79a535c13cc4fede6f87b/1625791059364/small_law_firms_near_me.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60e8a27918b8202efd03b1b0/1625858681271/79845854728.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec8fd2f6fc466b5bf42f07/1626116051152/2nd_puc_business_studies_1st_chapter_notes.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_off0000d3e3.bin
f6fd8ede4ecfaad47ecafb07f9b8f33b904e2290264080641a3b4f67534cc2cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E3 16920 bytes
font_01_sfnt_off00010041.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10041 16792 bytes
font_02_sfnt_off00011858.bin
02de03443ccb6083db6aa1ed8c59dc7648494def0d9526b1c6bbacd4bbbfe26a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11858 10940 bytes

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