Malicious PDF — malware analysis report

Static analysis result for SHA-256 631e0cecc4999e5d…

MALICIOUS

PDF

35.1 KB Created: 2021-06-18 07:19:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9d2a233e05dea8adfcb3d60378d7c67d SHA-1: aa13c9f1685c554017bc9d809e46d554560710e2 SHA-256: 631e0cecc4999e5df2c4098e4ef2dda1588ae4a1e5292e2e51be766c226f6bdf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for linking to a game hack lure, directing users to the URL http://netcdn.co/app/431946152/roblox-dungeon-quest-noob-vs-pro-vs-hacker-game-hack. This URL is likely part of a phishing or malware distribution scheme, attempting to trick users into downloading malicious content by promising in-game advantages. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a social engineering attack.

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/roblox-dungeon-quest-noob-vs-pro-vs-hacker-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/roblox-hacked-ad_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/tiktok-free-folowers-joker_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-pokemon-go-accounts-level-30_GM1094591345.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/botton-complex-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-do-you-get-roblox-money_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_off00002ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA7 23008 bytes
SHA-256: 58faed20ccb430425e1f2722f39ef8ea028f6ee96fa01d0ab7c2bb922338756d
font_01_sfnt_off0000629c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629C 19516 bytes
SHA-256: 73db385629bd8bced942620677b37a83eef4f0d5470dd03e448b2a6730c1008b

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