Malicious PDF — malware analysis report

Static analysis result for SHA-256 36536d06f0cba1c3…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 12:47:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6823bba2363352b62b43dbee03e469ee SHA-1: 74164a0a14110dedd542c71fd8522814d2953742 SHA-256: 36536d06f0cba1c30a3d11933291e5687953df95f359904f2060e7c480029b5f
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/431946152/buxblast-com-robux-game-hack PDF link annotation
    • http://opac.disarpus.surakarta.go.id/repository/roblox-hack-2021-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-script-tampermonkey_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-minecraft-account-and-password-2021_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-hat-hack_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-free-wings-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/without-pokemon-go-free-account_GM1094591345.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-hack-invisible_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-yammy-hacks-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-army-control-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/get-robux-for-free-for-robloxcom-free4mobile24com_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-content-deleted-pants-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/customize-v4-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3440 22116 bytes
SHA-256: 7ebf05e7e5d058c27791915be9e7c29ca4409cfef4b8e389bcb773ed0e2a8b95
font_01_sfnt_off00006589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6589 18992 bytes
SHA-256: 197673ba6fcebc329b4784198f1377e9ca1d19b741085a403e584bd9650ddd4c

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