Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3a93b3ec66f005b…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 16:44:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7f5e52b21220925d1cd662797321f5e0 SHA-1: 15896d49fab6594ea78348362359aed973d68768 SHA-256: d3a93b3ec66f005b634d0ab4903cfdba29b8e577f198be9044f187a8f1d57e0c
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/rewards-roblox-com-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-hack-roblox-accounts-with-a-url_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-free-packs-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.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_off00002f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F04 22456 bytes
SHA-256: 8907063900ae802571279f698a865c28b92c787e28b2be7e9ac2077be4286697
font_01_sfnt_off00006132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6132 19084 bytes
SHA-256: 072eee2cf5de68af9442ae7b5ce03647f651566b237e5c3ca6269a0d5384abfe

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