Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5146b74343fb3de…

MALICIOUS

PDF

35.7 KB Created: 2021-06-29 13:10:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9f9bdd5a79a2ab156f83dae0e18e83a3 SHA-1: 61f51204d5ede1fa9a4966aca4d194f0fbc86977 SHA-256: d5146b74343fb3deeecd6ed5e94af85f87b15d80bb140eb2a89484ac2e7d41b2
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that lead to websites offering game hacks and currency, such as 'free robux'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' specifically flags this behavior, indicating a social engineering tactic to trick users into downloading or visiting malicious sites. The ML classifier also strongly indicates maliciousness.

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-determined-7-hack-game-hack PDF link annotation
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/free-robux-no-password-2021_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/free-item-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/roblox-script-executor-free_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/adoptme-club-free-robux_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/free-tokens-roblox-assassin_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/free-mouse-auto-clicker-for-roblox_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/100k-robux-free_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/wie-bekommt-man-free-robux_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/get-free-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/2021-robux-free-daily_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/how-to-get-free-gear-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/how-do-you-use-tunturned-roblox-hack_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/hack-for-roblox-nijitssu_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/rc8-roblox-hack_GM431946152.pdfIn PDF document text
    • http://simpt.stikesmitrakeluarga.ac.id/cendana/repository/roblox-r45-hack_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000334e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x334E 22336 bytes
SHA-256: cd320a49d9a7661e0aaf13cfea2b67a095577264749b6c64ff782668adea9014
font_01_sfnt_off00006508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6508 19540 bytes
SHA-256: 7eb70d27212b1efffb100c5e653411594599aaf3d997aff0bdca89249976d4d2

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