Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc522fc15ba1dea…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 17:12:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: dce8fd95927f0e417451bb672c7e0645 SHA-1: 41e3b56801d5bb22d4617863988bdaec2fab8e4b SHA-256: ffc522fc15ba1dea1e1b767171153d6b852001bd3e84aed7b5812ddda255857a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.tw/app/479516143/how-can-you-get-minecraft-for-free-game-hack PDF link annotation
    • http://cintabaca.org/katalog/repository/free-admin-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-generator-that-really-works-that-works-right-away_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-adopt-me-free-unicorn_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-hair-on-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/cheats-for-roblox-jailbreack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/on-roblox-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/auto-runner-roblox-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-prison-life-hack-script-mobile_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-pedo-van-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-generator-no-survey-no-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-game-no-download-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/does-roblox-ban-people-for-hacking_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/tp-hacks-for-roblox_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_off00003401.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3401 22676 bytes
SHA-256: 89d01b8f9398ddc80c578de5d0afff6b4ea79eff09e654fbffe4e72f1e53ac2e
font_01_sfnt_off000066b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B9 18464 bytes
SHA-256: 8c0be28f95dea458027bca4435945abd711b328c8201bcef44ff76421a6436b2

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