Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd0a15cd92b77e6…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 18:21:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e9b6864e5884cd56aa575d614bcea975 SHA-1: e3fc11aa5707df17e863ef64cf210b4aad9333dd SHA-256: dcd0a15cd92b77e635b80452fb7af252f1f00b062ca096bd1aae3298f7d1797d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains a high-severity heuristic indicating it links to a 'free generator / game hack' redirector. The document body and numerous extracted URLs reinforce this lure, directing users to sites promising game cheats. The primary malicious URL identified is http://netcdn.tw/app/431946152/free-roblox-codescom-game-hack, which likely serves as a gateway to a malicious payload.

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/free-roblox-codescom-game-hack PDF link annotation
    • http://opac.stieimalang.ac.id/repository/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/descargar-roblox-hack-robux-apk_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-games-for-kids-roblox_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/robux-download-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/nate-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/tiktok-for-free-download_GM835599320.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/how-to-get-any-gamepass-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-scripts-2021_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-free-items-thumbnail_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/hacking-tool-roblox_GM431946152.pdfIn PDF document text
    • http://opac.stieimalang.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://www.opac.stieimalang.ac.id/repository/roblox-robux-hack-no-survey-no-password_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_off000030b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B9 23268 bytes
SHA-256: 99c2bb0f7645ed61aee93616e6be7e4fd7892bc931bbeb052b723ab20fcacf3c
font_01_sfnt_off0000653a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653A 19084 bytes
SHA-256: 9817c384228b81bcb2102f5c35996ba820955ee25ef1b0d2602bc846a1b6a571

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