Malicious PDF — malware analysis report

Static analysis result for SHA-256 8762feeaec827495…

MALICIOUS

PDF

34.4 KB Created: 2021-07-01 04:38:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 12764bb32fbe1f21ba94af7f41b618b7 SHA-1: 2efc9a84c0f91d70c315ad2fed901cc9787e2e7d SHA-256: 8762feeaec827495405b33123af66b4ae2f0c682debd60cb72235cae0bf1ff69
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links and a lure related to game hacks and free currency, indicating a social engineering attempt to redirect users to potentially malicious websites. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent. No scripts were extracted, but the primary attack vector appears to be a phishing lure.

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/how-to-use-impact-remastered-roblox-hacks-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/robux-hack-2021-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-free-inlimited_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-no-files_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-god-mode-hack-script_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-speed-hack-in-legendary-football-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/what-is-the-secret-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-use-inspect-element-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-800-robux-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/exploit-download-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/are-there-cheats-on-roblox-arsenal_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-how-to-get-free-clothes-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_off00002e0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E0E 22396 bytes
SHA-256: 178636d845bac9d1177bcb222be30fe18423f161ec3f5b6ca3360029ef3ce3bf
font_01_sfnt_off00005fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC7 19532 bytes
SHA-256: 50df6baed5cf21abb00ec8b7544bc4d52814a0d54c2cf29511ae9ecf2f8706a5

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