Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce08b99e357c03a7…

MALICIOUS

PDF

44.7 KB Created: 2021-06-11 04:31:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1631f0f91edab9e17810c06181b9e9bc SHA-1: 2ee1e2168a3078f3edffe40a3b49b872e32cfda6 SHA-256: ce08b99e357c03a7988a254f044443d003758e892acde1626183ff315464c164
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 0.9865

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 https://netcdn.tw/app/431946152/free-simulater-kit-for-roblox-game-hack PDF link annotation
    • http://firesafetyservices.biz/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-free-obc-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/robux-hack-easy-2021_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/cheat-roblox-dll_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/free-robux-at-http-rxnow-eu5-net_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://firesafetyservices.biz/images/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://firesafetyservices.biz/images/coin-master-daily-gifts_GM406889139.pdfIn PDF document text
    • http://firesafetyservices.biz/images/how-to-get-free-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_off00004ec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EC0 26040 bytes
SHA-256: 9abce10b3a53760e0f62be2dbe35b07f77d4a73913eb8bbfffada5ba858524af
font_01_sfnt_off00008a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A94 18800 bytes
SHA-256: 57e92686bc25500c06815526bfa77e3d41294a62965fcec116fc49ca36973705

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