Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ffe1fc3bee9f3ca…

MALICIOUS

PDF

77.9 KB Created: 2021-07-16 23:25:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d71c2fead9687df1b3ab0795b5444b12 SHA-1: 75dab016e77c5a5e29e487b5622212c7756f0a1c SHA-256: 0ffe1fc3bee9f3cafc7c469bbe4db0a2e04237cb8cc3fd74cd848f7517bd68a3
74 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. The 'SE_INVOICE_LURE' heuristic indicates the document's content is designed to deceive users with fake invoice or payment language. The embedded URL, https://irlanc.ru/square?utm_term=spend+analysis+the+window+into+strategic+sourcing+pdf, likely serves as the next stage of the attack, potentially leading to a phishing site or malware download.

Machine Learning

  • Nyx PDF Classifier clean score 0.1551

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://irlanc.ru/square?utm_term=spend+analysis+the+window+into+strategic+sourcing+pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e92b1a2210ba6bce128724/1625893659036/lopanibov.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_off0000d062.bin
45485a076bdfda89302fd50f93b3320b711c948431c2d55bb40d1285ad4ee3f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD062 15944 bytes
font_01_sfnt_off0000f96b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF96B 16792 bytes
font_02_sfnt_off00011182.bin
d90ee0e83c7553678db2d9dad4225c0e22a169cfe09eabde4afcb7c1164f23e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11182 11272 bytes

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