Malicious PDF — malware analysis report

Static analysis result for SHA-256 65266d043a477d3d…

MALICIOUS

PDF

33.6 KB Created: 2021-06-29 00:20:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: fa05551086b1fa719bd4defb04f5894e SHA-1: 8faff31fa78bf0ccb9d0235f132616f510b9b3db SHA-256: 65266d043a477d3d5c4ec74d531a2acc795ade8a25241fc6fa70248b6cc251fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The document body and embedded URLs strongly suggest a lure to trick users into downloading potentially unwanted or malicious software. The presence of multiple redirector links indicates a deliberate attempt to distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/hack-robux-free-2021-game-hack In PDF document text
    • http://library.imz.or.id/repository/free-robux-apk-oct-18-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-without-paying-real-money_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-claimer_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-roblox-thumbnails_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/develepor-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-imits-in-catolg-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/hack-roblox-weight-lifting_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-giveaway-xyz_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-roblox-cad-codes_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/robux-kostenlos-ohne-handynummer-kein-hack_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_off00002c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C9B 22160 bytes
SHA-256: 38820f68e80d17917bc44950f7dcc76de84b51299b9cc8bb3f50f335af7a5337
font_01_sfnt_off00005d78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D78 19288 bytes
SHA-256: 2074d2f7dd3ce4c3482d9f677c4ab543c822145823baf20cd6027cd42ff61c6e