Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a72b2d914e13ae…

MALICIOUS

PDF

76.2 KB Created: 2021-07-20 19:54:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bd781189425731ad86b8b419ad62b9b7 SHA-1: 4c41afcac2813bb73bd0436eb0d15246986117dd SHA-256: 96a72b2d914e13aeac5ce6e6342034337ecef824dc714e25bd6d6e80f3da5f29
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 presence of embedded URLs suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9680

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/IdU8rIDf9lQ/square?utm_term=good+morning+funny+gif+download
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e961963ba7d954d547ff95/1625907606362/xukosutetexufevid.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8779f211c9314ad41578f/1625847711609/tutaweganusitelisi.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f639cf1cd2fa6887711ffc/1626749392079/irrigation_control_system_seminar_report.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ec7ab7ad1bf7105ccaf34a/1626110647778/98197353329.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f6013213864f6949301cb2/1626734898777/tom_and_jerry_all_seasons.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e85ebfd5da64721d7aa286/1625841344116/5784170696.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e8fda5854c1d3b3485869d/1625882021459/jafekisawekilov.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec952669d4b63361487d81/1626117414238/mastery_learning_di_bloom.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_off0000cbc9.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC9 16792 bytes
font_01_sfnt_off0000e3e0.bin
64fae8c8dfab667baca4f110105b42a8b9ebe2f40c9baa83df288ccae5ef6665		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E0 10640 bytes
font_02_sfnt_off0000fbff.bin
ec230163bdb441d267e0c3b0e47b08820a784ee2ea070a9d73cde8453706c129		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBFF 15864 bytes

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