Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a131e30e0145be…

MALICIOUS

PDF

43.7 KB Created: 2021-06-10 21:28:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7528e9e15c6b6085bc5f859321749fde SHA-1: dff826cdc19e5f06272ea68d4e9e2379a40b8bd7 SHA-256: 09a131e30e0145bea5a818ac3f2478cdba0fb2301166ba92a9654b96436a40c9
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/roblox-hacks-trail-game-hack PDF link annotation
    • https://opac.itp.ac.id/repository/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/blox-best-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-checkmein-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-robux-with-cheat-engine-67_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hacker-de-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hack-accounts-roblox-no-offers_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-at-roblox-wall-hack-cbro_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hack-script-roblox_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
stream_004_off000050b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50B4 24104 bytes
SHA-256: 986f8bb564fe076653cad528b973147f87af73ff969a21d42ed514b38359d2d6
font_01_sfnt_off0000880a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880A 18300 bytes
SHA-256: d1a7a7318925bf4e508521446054209d712e5f6899ece67e484699137212f5dd

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