Malicious PDF — malware analysis report

Static analysis result for SHA-256 36465cabdb77c686…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 15:18:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c2a91dae1b766fde367db15745af0af8 SHA-1: 3d9acf5552a0903f0435f820748a8519aee5ac27 SHA-256: 36465cabdb77c686efbcb98a9d7bb188a909b955e0df9ac10ee380c4bd535156
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-pc-cheat-engine-game-hack PDF link annotation
    • http://perpus.masda.ac.id/repository/free-robux-codes-not-used-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/raspberry-fly-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hacking-peoples-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/pokemon-go-free-100-iv-cp-list_GM1094591345.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/1m-robux-cheat_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/rexic-roblox-hack-full-lua_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-new-hood_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-2021-unpatched-trackid-sp006_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/games-that-give-free-robux_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
stream_002_off00002e33.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E33 23232 bytes
SHA-256: 03749d4de65cfa0013e0e3b0ba242c12688fb482759561b67df4fa8cc0d9f912
font_01_sfnt_off000062b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B9 18324 bytes
SHA-256: 6d12a5e0eb98766e75a11546a2696c78e8e61564fc37edf79f652a555e1dad85

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