Malicious PDF — malware analysis report

Static analysis result for SHA-256 a025fbb1b89b9a30…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 01:33:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b1453916b7dbc522e3759b932fca418f SHA-1: 5e6ff7b73d3c57f2eb17aca342c0cc3435b63474 SHA-256: a025fbb1b89b9a302f4b8a7237adc2ef502d9452d22296d3f952e2295a4c3673
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/479516143/minecraft-free-download-windows-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/de-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-live_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-murder-mystery-2-wls-3-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-protosmasher-free-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-hck_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-skins-free-download_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/btools-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-2021-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-no-human-verification-or-survey-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_off00003064.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3064 22648 bytes
SHA-256: 8516b22a875374f7b2989191efdff3c86d98b668755485ad4a7608db5626426d
font_01_sfnt_off000062ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AE 18776 bytes
SHA-256: 1816d41857fafb62710145750044d0772271d156c0c542d24f261faa84011891

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