Malicious PDF — malware analysis report

Static analysis result for SHA-256 660a268a81d2f716…

MALICIOUS

PDF

96.6 KB Created: 2021-07-19 19:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 79282a13d7496a92db275411b7a8c603 SHA-1: 3c08b6090c1fe8a143d23897d8267b2616a00107 SHA-256: 660a268a81d2f7160d6d5f7d56ba42be63f6de322df51812986d0fb4ca1ab5ca
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains embedded URIs, one of which points to a resource that could be used to deliver a secondary payload or redirect the user to a phishing site. No scripts were extracted, but the presence of embedded URIs suggests an attempt to leverage external resources for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5781

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/gOBB6uaVNRA/square?utm_term=ux+design+powerpoint+template+free
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f0c1ea6186c431003d4538/1626391019123/jamaxinam.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f394cc9ee5897bffa563b9/1626576077176/23597017502.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f19ae87a3aef7e4919ce60/1626446568740/29245867740.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f46fd5d68f32259064f274/1626632149559/oye_lucky_lucky_oye_mp3_download.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_off0001156e.bin
ee6284bc907edbef89e50e1a9ced9ee5e1e768bfca58ad9cdf3a8e4f3efe5c1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1156E 11036 bytes
font_01_sfnt_off00012eed.bin
41c4a0ec50595afd1aab05c1f4acda22c294bb36a9b0927e6f83dae806624b83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EED 18152 bytes
font_02_sfnt_off00015eca.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15ECA 16792 bytes

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