Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bd7361776a14f4a…

MALICIOUS

PDF

45.5 KB Created: 2021-05-16 01:30:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 55a190186108056ff3fd34b829707fde SHA-1: f607a5246bef6fbb1661c1f9f54e44f351c4bcc2 SHA-256: 4bd7361776a14f4aecfa4eb66cd10cd61cfa6cb5639fb0c4e232b642c5a04ce0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a game hack, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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 https://netcdn.xyz/app/406889139/coin-master-hack-ios-no-jailbreak-game-hack PDF link annotation
    • http://www.habitas.it/images/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • http://www.habitas.it/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.habitas.it/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://www.habitas.it/images/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://www.habitas.it/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://www.habitas.it/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.habitas.it/images/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • http://www.habitas.it/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://www.habitas.it/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://www.habitas.it/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C91 24648 bytes
SHA-256: cab8860f4e71bbf5dcdbed1de86f2d47da4546d15a36af66b4dd6e18ccc172f7
font_01_sfnt_off0000851c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851C 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00008ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FFB 18112 bytes
SHA-256: 0b3ca5face5facb5c3ab82e5b9d367123ba9b47c1b773fe7253bb83fe1962477

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