Malicious PDF — malware analysis report

Static analysis result for SHA-256 1849c6af486faee6…

MALICIOUS

PDF

79.4 KB Created: 2021-07-21 03:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bb1914af19757a229495fcbbf546248f SHA-1: 2b33143917f6e067d8a98df2c951fa140cc4342e SHA-256: 1849c6af486faee6f98db59f4380f28625a259b586ad308798ae6ab27f9bbfa8
66 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan. The presence of embedded URLs, including one related to 'square' payments, suggests a phishing attempt to trick users into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URIs indicate potential for malicious activity, likely related to credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier clean score 0.1467

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/HbdJGeoIq_s/square?utm_term=pdf+page+splitter+software
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f760e01123550d4553f6d8/1626824929038/86773441313.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f23edda9adb728039bd07c/1626488542116/lady_gaga_outrageous_outfits.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_off0000d787.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD787 16792 bytes
font_01_sfnt_off0000ef99.bin
c81ea254492f13536b4d3a32221e53a0f9489e7b4526188d85deb18dc2e549de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF99 16244 bytes
font_02_sfnt_off000119dc.bin
44cd48e387f83dbe8240e99dddd63ed6554e6b3296ca6fc0884df88312cd0a5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119DC 10656 bytes

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