Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f61fe243ffd97a…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 01:25:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 97dfb74989d58cf6badde4055c23c1c1 SHA-1: c104e65ca7aa4d77e3e7b85f6ab3854b0686c888 SHA-256: c2f61fe243ffd97a97923d4f47b1b27351076109cceb242ee9519d50a3e2f7ac
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 0.9980

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/406889139/coin-master-hack-generator-tool-game-hack PDF link annotation
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-draw-on-roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-lvl-7-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-spins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-rich-roblox-accounts-discord_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-into-other-peoples-accounts-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-hack-thrue-walls-roblox-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-robux-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/comment-avoir-le-double-sabre-laser-jedi-temple-roblox-free_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-get-real-robux_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_off000031fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31FD 22580 bytes
SHA-256: cec4c95daf46f726a44a607a916edc9b62c78c3217225ae3ed0d8e9ff094d066
font_01_sfnt_off0000644c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644C 18080 bytes
SHA-256: 327a07673a8d53801420e060aff8c245633122f699ccd3ede14de91ca17eb61d

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