Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb182c41ce739318…

MALICIOUS

PDF

75.1 KB Created: 2021-07-19 05:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bc25bf866d26e3c82845f87e508fcdf6 SHA-1: de7a54198d29010f9640be18ae7a33a48de63fc0 SHA-256: bb182c41ce739318761096f2e9a83822cabe85c788aa009c33fead69cdadde73
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs suggests an attempt to redirect the user to external resources, which is a common tactic for phishing or malware delivery. Although no specific script content was detailed, the PDF format and embedded URLs are consistent with spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7527

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/UQ8tT55rDuk/square?utm_term=i+will+meet+you+there+in+spanish
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f2b3a7d9389f5e8086706c/1626518439515/bharathi_kannamma_serial_song_free_download.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f4b2b60dbab00e46f26a77/1626649270326/sisd_reading_first_lccs.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f4a6ebc5d9e6782cf00def/1626646251926/pomexepemipo.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ee025a24c32e4364b83489/1626210907089/49151284486.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_off0000c22f.bin
43e83f8b392dbb7585a01bdf825fa3de03fb86964d1e3058d24cb2db43239e0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC22F 17488 bytes
font_01_sfnt_off0000f022.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF022 16792 bytes
font_02_sfnt_off00010839.bin
4eff949e1d9fc27f7b4361df8df7aeb7791b08a77a32695315fcb61d1385bceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10839 10768 bytes

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