Malicious PDF — malware analysis report

Static analysis result for SHA-256 419341bf3997b1ac…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 01:27:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f3dfe8ae4d329d82262f93774337e9f4 SHA-1: c9b07a640225217c57a23e3471306743b71a8028 SHA-256: 419341bf3997b1ac12aa5b9f0117ecf8cf900fca178564d0f3f5fec395ba8e78
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains numerous links and a call-to-action phrase, attempting to trick users into downloading a malicious file by promising Roblox-related cheats. The ML classifier and heuristic firings strongly indicate malicious intent, likely to deliver a second-stage payload via the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://netcdn.co/app/431946152/how-to-hack-roblox-dinosaur-simulator-game-hack PDF link annotation
    • https://i-tech.ac.id/perpus/repository/roblox-jason-mask-free_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-use-chatbot-hack-roblox-not-working_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/hacked-roblox-servers_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-no-survey-android_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/hack-de-robux-para-todos-pastebincom_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/i-want-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-how-to-get-free-codes_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/kupcake-hack-roblox-64-bits_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/www-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/best-free-weapon-mad-city-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-free-knives-in-mm2-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-with-credit-card_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-cheat-engine-bypass_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-roblox-injector-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-for-roblox-without-human-verification_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-guest-pants-free_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/hackeando-mi-saldo-de-roblox-sin-pagar_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-noclip-roblox-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3285 22772 bytes
SHA-256: 68c290b422280be733ee85f249793151f3d7eb3a9e90153c375aa892077fe822
font_01_sfnt_off0000653c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653C 19612 bytes
SHA-256: feb738646a9da79a6603b77b31758280cbeacc75f8880a427a7b90f7185ebed4

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