Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac63ddb3cb7d3e2e…

MALICIOUS

PDF

35.8 KB Created: 2021-07-06 03:20:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b13584e128c7ee3e3e21f1bb0a3db98b SHA-1: ab888f1c577d58ed968278aae1f0b11645a8723b SHA-256: ac63ddb3cb7d3e2e5938c11c3784a854b71774952517be30fb289e49e502ddad
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/406889139/coin-master-hack-without-verification-or-downloading-apps-game-hack PDF link annotation
    • http://www.opac.stieimalang.ac.id/repository/how-to-hack-roblox-to-grt-robux-the-easy-way_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/simplysarc_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/pubg-uc-shop_GM1330123889.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/all-free-roblox-catalog-items_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/how-to-get-xp-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coin-master-game-download-free_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/coinmaster-blogspot_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-no-human-verification-survey_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/what-is-wurst_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_off00003333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3333 22760 bytes
SHA-256: c5e8b5226ab8de880e358f24fa83f4c279cf21076491ce486095581a8d1001a8
font_01_sfnt_off000065f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F2 19400 bytes
SHA-256: 7055c0b927c5b3f5d83892c818414459ed7060aca91a64b83b2bd90b5073d3c7