Malicious PDF — malware analysis report

Static analysis result for SHA-256 db4c89ab28c9bbea…

MALICIOUS

PDF

34.0 KB Created: 2021-07-01 12:13:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d39d342498134f76c3bcc7f66ec6e5fd SHA-1: 6d0884fb3fe6ac1447c8f5e94c4322a50b415b81 SHA-256: db4c89ab28c9bbeab1b1e62e49321d6490409c2c7dbd05eb14c24cab340cf1b0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and references to 'free Robux' and game hacks, aiming to lure users to a malicious URL. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the embedded URL 'http://netcdn.co/app/431946152/robux-pin-free-game-hack' strongly indicate a phishing or scam attempt. While no scripts were explicitly extracted, the nature of the lure suggests it could lead to further malicious activity, such as credential harvesting or malware download.

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/robux-pin-free-game-hack PDF link annotation
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/my-roblox-account-was-hacked-and-email-changed_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/go-to-this-website-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-top-model-cheats_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/hacker-roblox-server_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-roblox-codescom_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/fps-hacks-roblox-aimbot-how-to-activate-aimbot_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-2-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-hack-items-into-roblox-shirts_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/get-free-robux-generator-com_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/the-best-free-hacking-tool-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/hack-de-roblox-de-robux-por-mega_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-hack-free-robux-hack-2021-ios-android-pc_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/green-ball-complex-free-robux_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/free-and-save-robux-haks_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/roblox-cheat-engine-patched_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-hack-bloxburg-roblox_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-generator_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/cheats-to-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.man2kotatangerang.sch.id/__statics/gudangsoal/files/pokemon-brick-bronze-roblox-hack_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_off0000302a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x302A 21768 bytes
SHA-256: 38a390160c0fdc3b5cb84b802e44eaeccbcfeaccb63c017e05599c7e219e5027
font_01_sfnt_off0000600a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x600A 18992 bytes
SHA-256: d59eafa89dca653d88b5f722342c63d172eaef6e743391db97d26f25cf32263d

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