Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e156fbe5d7deef…

MALICIOUS

PDF

33.2 KB Created: 2021-07-09 02:41:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4e075e3b63f4c7e8cf737f70931cb769 SHA-1: c0e2586b77be577e0faa5a6b0b5d6dd3a02229e1 SHA-256: c6e156fbe5d7deefef259813b9afb02181209d99fb6bf5f8ed0b34244f14d915
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/479516143/is-minecraft-bedrock-free-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/free-roblox-soldier-gfx-ww2_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-hats-game_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/bhop-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/dantdm-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-sniper-update-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/medikit-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-flight-hack-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/can-cheat-engine-execute-lua-c-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-free-roblox-cards_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/elektronomia-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-money-in-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-jailbreak-speed-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-infinite-robux-cheat_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_off00002fa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA2 21444 bytes
SHA-256: d1b2277ab02c8e82c2bdd8fb6080699dc0627f0a5d27051364ab6f8fc4251839
font_01_sfnt_off00005e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E52 18560 bytes
SHA-256: 2cf9d2c17787111468ec72d6b2ad13757ff8f8906a02aba501c2b47558e3271e

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