Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5f0c8bee5e60bad…

MALICIOUS

PDF

35.1 KB Created: 2021-06-22 20:42:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1ebe4f894c19a47f17ed349b4119a04e SHA-1: e5f4a4afdd45b97920e7bc93aab3664a6090dd7e SHA-256: a5f0c8bee5e60bad56e14835c8abebfc3e7c86ce05014a845861757cf952f7e2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks, specifically mentioning 'Hack De Dinero En Jailbreak Roblox'. It includes a high-confidence heuristic firing for a game hack redirector pointing to 'http://netcdn.co/app/431946152/hack-de-dinero-en-jailbreak-roblox-game-hack'. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a site that may host further malicious content or exploit kits.

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/hack-de-dinero-en-jailbreak-roblox-game-hack PDF link annotation
    • https://loba.com.vn/public/upload/files/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/roblox-mod-menu-hack-download_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-place-downloads_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/ben-10-universal-showdown-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/how-to-hack-robux-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://loba.com.vn/public/upload/files/free-roblox-inspect_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_off000031c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C5 22588 bytes
SHA-256: d182f0b5646474829eb86f512e37c4a347e57930febf51abda6181052e3117ec
font_01_sfnt_off00006410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 19108 bytes
SHA-256: 4046d93960d0b3981bf9985f30ad176ff4e4f2a5627e81ee52f2d2554878db77