Malicious PDF — malware analysis report

Static analysis result for SHA-256 6151b8106aa4b3c2…

MALICIOUS

PDF

76.3 KB Created: 2021-04-02 10:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6ac45092df74117115f7062a1d2642f SHA-1: 55874db9b49e00f4c569840da0f3e32af444d89b SHA-256: 6151b8106aa4b3c2f00d9280de5904e4702c013c45784bcf25150dfbb35159f1
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URL disguised as a search result. The ML classifier and ClamAV detection indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6727

Heuristics 3

  • 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
  • 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://bologen.ru/award?keyword=chemistry+acids+bases+and+salts+pdf
    • https://cdn-cms.f-static.net/uploads/4483873/normal_6010c6d3b03d1.pdf
    • https://cdn.sqhk.co/romilononove/ieicuic/guide_for_stumble_guys_multiplayer_royale_download.pdf
    • http://subbellassecret.com/installing_a_bosch_800_series_dishwasherqz5xq.pdf
    • https://cdn.sqhk.co/naxupowu/MhcwhbE/71170116907.pdf
    • http://lnstagaram-verifiedbadges-from.com/sakafuf5jopv.pdf
    • http://propovar.ru/godamonykzdc.pdf
    • http://easybranding.org/what_are_the_12_steps_for_alcoholicsm25tt.pdf
    • http://grantmedica.ru/46624435681k3i07.pdf
    • https://static.s123-cdn-static.com/uploads/4369508/normal_5ff9f6fff3bb9.pdf
    • https://cdn.sqhk.co/pibepufas/PgcjjDh/goodreads_best_books_march_2020.pdf
    • http://hamlikjorettoop.ru/block_strike_hack_apk_android_1fsdpk.pdf
    • http://swiss-gear.shop/how_to_improve_pronunciation_in_english5qvhy.pdf
    • https://cdn.sqhk.co/mugukawi/11yjatH/famovaj.pdf
    • http://bluetea.space/72963441147y5hno.pdf
    • https://cdn.sqhk.co/fejisedetu/jj5idia/14880425019.pdf
    • https://cdn.sqhk.co/rapawaferew/fpgh1pV/62367840888.pdf
    • https://cdn-cms.f-static.net/uploads/4378619/normal_601a2c83b1975.pdf
    • https://cdn.sqhk.co/rijomawonuj/iiehbMX/dining_table_set_ikea_uk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://aa3bb5c3-2bd4-4791-9e2a-6e31d5009b04.filesusr.com/ugd/60e703_f403f1996f864d4e8260e2b9d4474c92.pdf?index=true
    • https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_d11142dc535e4c37be78aeb1616cb246.pdf?index=true
    • https://aaf8962b-2ea5-4403-bfea-7c32f2b3f77e.filesusr.com/ugd/8f3a65_5894a160ef9449399bd9c1be63147c10.pdf?index=true
    • https://04934832-22f3-474e-96de-b9d593e92251.filesusr.com/ugd/f390e7_53733ede931b46fc812db37dcbfcf0a5.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f506.bin
7173d034e5debcb9a69cb3fdc3564d9d0d414bea7c8226bbf1eb72c40368896d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF506 5336 bytes
font_01_sfnt_off00010704.bin
fd3b8a86759c1ca3a2706d4a0609675f5cd7451916a340afc202d28e1183d6cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10704 10316 bytes

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