Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e597f3be4b47b2b…

MALICIOUS

PDF

75.6 KB Created: 2021-02-27 11:33:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b317a21d368c6eda2393bb4eef0d9880 SHA-1: f3d1c4581bfb1a18f1053734277b85c134468da2 SHA-256: 2e597f3be4b47b2bdc8e0f2051738c7b77cbf08d18c8dae479dccbe4b658a036
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'kuzutuzo.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to jokes, which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8029

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://kuzutuzo.ru/aws?utm_term=o+que+%25C3%25A9+o+que+%25C3%25A9+piadas+engra%25C3%25A7adas PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458623/normal_602c332fa1c39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377909/normal_5ffe93429dea5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495526/normal_5fe31f6a5678d.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/ffgijgj/faxojawapuzogozif.pdfIn PDF document text
    • https://cdn.sqhk.co/gusoguribus/qAjijex/umc_lubbock_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497695/normal_602e49a31b147.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/jghhjfS/huawei_launcher_apk_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425005/normal_5fd7fbc2b5955.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/AiaiiDF/chicken_invaders_3_cheats_ios.pdfIn PDF document text
    • https://limikasideg.weebly.com/uploads/1/3/4/4/134446439/xunirimavox_dedujulemerirob.pdfIn PDF document text
    • https://binazinir.weebly.com/uploads/1/3/4/1/134108718/jozigirako.pdfIn PDF document text
    • https://wisatevifo.weebly.com/uploads/1/3/0/7/130775851/f077233eaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495997/normal_5fdcf979342c6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/destiny_2_leviathan_prestige_raid_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/sibagodap.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/22698689898.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF92 5572 bytes
SHA-256: 48be887cd29d1a32343928b94fa65eecd51fdafccc9c1bd00371321eb9b7806f
font_01_sfnt_off0001023c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023C 4024 bytes
SHA-256: 9f75621705c079d7b4e4f9b4e32c57a36d49e95e22ab66696a48f12567657b6d

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