Malicious PDF — malware analysis report

Static analysis result for SHA-256 d43a6b5b232abe52…

MALICIOUS

PDF

32.7 KB Created: 2021-07-07 02:59:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 09a0aef488266b7bb1f9b96156fb9820 SHA-1: 0ec46f71280769a584e4de99b754bad031ff19d0 SHA-256: d43a6b5b232abe5288b79aab57328b18c356ae89459f71266b43e3be0df67ec3
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 0.9824

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-hack-people-on-roblox-game-hack PDF link annotation
    • http://ghi.dk/billeder/roblox-lumber-tycoon-2-hack-deutshc_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-champl-dll-hack_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/why-does-it-say-roblox-hacks-are-virus_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-free-necklace_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/easy-way-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/comment-cheat-dans-boku-no-roblox-remastered-roblox_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-account-roblox-november-15-2021_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/free-roux-roblox_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-no-anti-spam_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/cheat-engine-roblox-torso_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/pokemon-adventures-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-hack-no-verification-2021_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_off00002934.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2934 22424 bytes
SHA-256: eb8191f73f21d31e3bfceb566f7aea009ea931896c135ad397238dd5d35c338d
font_01_sfnt_off00005aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA8 19148 bytes
SHA-256: 0496404f34f461102572dff09184c0b6082fd286070dd383a6badfad3968c72e

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