Malicious PDF — malware analysis report

Static analysis result for SHA-256 f40beafbfe095cf6…

MALICIOUS

PDF

81.9 KB Created: 2021-07-18 12:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9c4fb0419621d89fe166080a8bd4bc46 SHA-1: 7dfec9f66fd87d9e4ad7f64f15c688b76fb66f98 SHA-256: f40beafbfe095cf617eea0e0b519f75a28ec9298f08e7683644395cd850de8e6
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 URLs, one of which is flagged as potentially malicious, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of embedded URLs points to an external resource being leveraged for the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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/~3/4P1vZUbBa90/square?utm_term=spinny+second+hand+cars
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f3d447699a8678c580640d/1626592328192/pifetudikamenosa.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f31278db752c5e49a85996/1626542713166/44704569632.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60ee7e80115d504d3a8a1594/1626242688757/green_edge_landscaping.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f1fa6e25d89e3fcfa82755/1626471022715/minestrone_bean_soup.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e89853f2156916d3ffdefb/1625856083711/zajulufadatowetulu.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f3a299aba5f52989ac2aba/1626579609998/harry_potter_hogwarts_mystery_unlimited_energy_ios_2019.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f1328ff32be22f00773858/1626419855938/approaches_and_methods_in_language_teaching_richards_and_rodgers.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e82063ce8457037ee53ff2/1625825379157/gotipejegoluleporuno.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60e8b45cbfade41bb3165cb7/1625863260111/4947261706.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e7f28c5eabb22f35dba12e/1625813644931/how_to_get_your_voice_deep.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60e8370795719b356d969d31/1625831175227/43487888297.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_off0000dc43.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC43 16792 bytes
font_01_sfnt_off0000f45a.bin
ee07eb1ca1c57541dda3ffafc9349bc2c9332df75eb72eab9d73ebb1c557fe6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF45A 10656 bytes
font_02_sfnt_off00010ca8.bin
5e31b7ef827864510f298bd0d10310a3f1ddcf6a5b77efea00f02cd48ffb105f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA8 17776 bytes

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