Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e1c25ae9497892…

MALICIOUS

PDF

81.2 KB Created: 2021-07-21 00:44:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d5f5d14346515e8ddfa413897841c565 SHA-1: f0a4dcc3c2f6c1d96057fe2a8a495290300997ad SHA-256: e1e1c25ae94978928d766cb49e31df1e4e67f27a7f2a4a4f041ae5fa3c01d86e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains embedded URLs, one of which is https://feedproxy.google.com/~r/razvivatel/yapz/~3/pL_UGxDroB4/square?utm_term=pinoy+tv+show+me, suggesting a lure to a potentially malicious site. No scripts were extracted, but the presence of embedded URLs points to a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6221

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/razvivatel/yapz/~3/pL_UGxDroB4/square?utm_term=pinoy+tv+show+me
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec7e446ad76c09748fa8c5/1626111556675/nightmare_withered_toy_chica.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f2c43a8c10a93e50466b48/1626522682612/21645180205.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f2ec4c4b68c137e69664f5/1626532940480/how_to_end_an_informal_letter_to_a_friend.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_off0000de4a.bin
b231fda908dfc8a552d981ebaf0b856088f4e8333f548f19aa75726f18833d53		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4A 16860 bytes
font_01_sfnt_off00010a61.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A61 16792 bytes
font_02_sfnt_off00012278.bin
8fc4ac10a8f61a7bf0c6dfe942e39733992b935983deb6e8e6698b2780f86feb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12278 10332 bytes

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