Malicious PDF — malware analysis report

Static analysis result for SHA-256 1181ee2fb98d1d46…

MALICIOUS

PDF

34.7 KB Created: 2021-07-08 12:59:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 608396a884cc908e9d9948faaaf3b0da SHA-1: c7fdcd9283e8e6a3379289b952fea494475c4494 SHA-256: 1181ee2fb98d1d4687e95a3658a3aa0ae5c0b886951b46ad54061b716527a409
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/431946152/how-to-get-free-robux-on-pc-game-hack PDF link annotation
    • https://foc.vn/public/upload/files/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • https://foc.vn/public/upload/files/be-thomas-on-roblox-hack_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/www-bloxburg-club-free-robux_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • https://foc.vn/public/upload/files/como-hackear-roblox-2021-en-pc_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/roblox-como-tener-robux-gratis-2021-octubre-nuevo-hack_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/how-to-cheat-in-roblox-games-defenders-of-roblox_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/claim-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/how-to-get-free-codes-for-roblox_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/new-roblox-bleu-level7-hack-exploit-best_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/free-roblox-accounts-with-robux-2021-1_GM431946152.pdfIn PDF document text
    • https://foc.vn/public/upload/files/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://foc.vn/public/upload/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30CF 22368 bytes
SHA-256: d0b812aea3d7fb17a0cb5bd098269c88f372190de70afd83952ed8dd36032aeb
font_01_sfnt_off00006286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6286 19136 bytes
SHA-256: aef8c40112b84489b97b1b1a2bbf6c88e9b8fe4bc85a356f803a45374dab5087

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