Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa90804cb3f2803…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 23:41:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0a66e49dae2d4baba6de06f60a35852d SHA-1: 0b2f1b2a525e136b8b7f5142198ef9b68c8aa567 SHA-256: 9fa90804cb3f28035d2c73416de7f485f21e0d07de62a2f0178a159ddb819860
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a lure related to 'Roblox Hack Download 2021' and a high-confidence heuristic firing for a game hack redirect. The embedded link directs to a URL associated with downloading game hacks, strongly suggesting a phishing or scam attempt to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious.

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/roblox-hack-download-2021-game-hack PDF link annotation
    • https://doingimc.com/image/data/files/como-desbloquear-un-cuenta-hackeada-de-roblox_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-robux-promotinal-codes_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/hacked-roblox-2021x2021_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/robux-gainer_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • https://doingimc.com/image/data/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-spin-link-for-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/top-10-roblox-groups-for-free-robux_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/hacks-on-roblox-to-change-ur-look_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/roblox-cs-go-hack-wallhack_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/when-pokemon-go-free-will_GM1094591345.pdfIn PDF document text
    • https://doingimc.com/image/data/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/no-human-verification_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/imperium-roblox-hack_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://doingimc.com/image/data/files/roblox-headless-head-free_GM431946152.pdfIn PDF document text
    • https://doingimc.com/image/data/files/how-to-get-free-robux-without-doing-anything-2021_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_off00002f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F26 22428 bytes
SHA-256: 6b7bacf6242a8fe1bd2a998ecaf75781cd9a365532340c24cba25668420a1e2c
font_01_sfnt_off000060dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DD 19376 bytes
SHA-256: e0dfdbb81f5a7576abd3beac27c06746e671bc44936345d4ba28798c23c76d4a

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