Malicious PDF — malware analysis report

Static analysis result for SHA-256 a12607fd2738aa4e…

MALICIOUS

PDF

34.1 KB Created: 2021-07-06 13:08:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2aff69093edad71927c5562c621d2ad5 SHA-1: 154a36cdfd68ec2b55eebe1bd122edcdc1a99a1d SHA-256: a12607fd2738aa4e92444a6ccc7724984035a8d183d8613f77fcecdd749f5aca
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/avatar-roblox-game-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/hack-cuentas-gratis-en-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-counter-blox-roblox-offensive-hack-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-sir-robux-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/black-hair-roblox-free_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-murdere-mystery-2-candy-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-adopt-me-money-cheat_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-free-xynapse-x_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-mining-simlator-cheats_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-card-id_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-use-cheat-engine-on-roblox-without-shutdown-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-bloxburg-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/royale-high-hack-club-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-roblox-games-without-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/play-minecraft-pocket-edition-for-free_GM479516143.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_off00002ef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF5 22252 bytes
SHA-256: 0e95f5a8df71584c4604919f4dd0324ca3d810b3311825e86586189e264ec081
font_01_sfnt_off00006065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6065 18964 bytes
SHA-256: 1379943476da574a4dab6a8d7032cbe9a71a66405b07e4af99d26083a0ac37fd

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