Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48a7b939a31face…

MALICIOUS

PDF

35.2 KB Created: 2021-06-26 03:48:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 7c33a0d2686c9fbfa513e61d5de677c2 SHA-1: 013270b0619b14c523aa5debc01ba297e586f62d SHA-256: d48a7b939a31facec945628efa3584683e7975b34bbbe886ca8adf5f0ab58ccb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are disguised as game hacks or generators for popular titles like Roblox. The ML classifier and heuristics strongly indicate malicious intent, likely to redirect users to sites that host malware or phishing content. No scripts were extracted, but the embedded URLs and the 'game hack' lure suggest a social engineering tactic to trick users into downloading potentially harmful files.

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/free-roblox-expoit-may-2021-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/free-generator_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-weight-lifting-simulator-2-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/como-conseguir-robux-gratis-2021-sin-hacks_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/master-free-spin_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-cheat-scripts-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-cheat-robux-apk_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-veil-exploit-free-download_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-bear-mask-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-auto-farm_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-free-holo_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-5-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hacks-to-get-in-people-acounts_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/2021-free-robux-daily-com_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-hack-someone-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-mod-apk-latest-version-free-download_GM406889139.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_off000031a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A7 21952 bytes
SHA-256: 0fa6c7e3b9619984d2ec08f42897dd6f3ac00407548cf1f76f839fe8b4dc83c1
font_01_sfnt_off00006241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6241 19828 bytes
SHA-256: cc32d48f49837667400336fa54cffd6aa8418b811e70fd46121594d3787dc44e

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