Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a6e0afaa1ba6ae6…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 10:22:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d769824f68f605ada8976b93ddc198e8 SHA-1: bd03cd93a562745f77b4013af47472a0034d7589 SHA-256: 8a6e0afaa1ba6ae6651c8ab87d40302bc01270752fc01db3626fc58123795c1b
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/free-robux-generator-without-verification-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/free-game-pack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-girl-hair-codes_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/earn-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-spins-on-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-green-dawing-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-korblox-pets-in-roblox-magnet-simulator_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-medieval-warfare-reforged-hacks_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-livestreams_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/fashion-frenzy-game-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/big-brother-hacks-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
font_00_sfnt_off00002e5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E5E 22800 bytes
SHA-256: 584b131066a55f0e137e73753fabb036d528b92ebd4c6ce8672823e2a073909b
font_01_sfnt_off00006166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6166 19436 bytes
SHA-256: d0e926b628c6de032872dc004c24afa0bd818e7bb7e50361af68be366a642f01

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