Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b4fc117283e401…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 13:17:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 38d3de6adda4519641ba1c61d45d1eae SHA-1: 7c8b85e12a082ca7fb14c518e33237ee69ca8ab5 SHA-256: c7b4fc117283e40104ade10fdd6dde3319d707462ed98380502add4a430b6389
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links disguised as game hacks and cheats, such as 'Roblox Fly Cheat Engine 2021'. These links redirect to external websites, including http://netcdn.co/app/431946152/roblox-fly-cheat-engine-2021-game-hack, which is likely intended to host malicious content or facilitate further compromise. The presence of a visual download button lure and ML classification further supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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/roblox-fly-cheat-engine-2021-game-hack PDF link annotation
    • http://pustaka.bbppketindan.info/repository/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-roblox-2021-jailbreak_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/tiktok-free-wifi_GM835599320.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-5-million-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-inspect-2021-saves_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-with-synapse_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/roblox-comcom_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/dragon-ball-hack-roblox-all-characters_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-horses-on-roblox-horse-valley_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/cheat-buddy-esp-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BB 21648 bytes
SHA-256: 6c52967744b78302a85421af906e320b877365ec127ef7cef47a4321a8b6eb24
font_01_sfnt_off0000604e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604E 19620 bytes
SHA-256: 3f5a8434cc1816aa6ae1044d751be67e70aed874a4d7e16fb603a8fe45fe0171

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