Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbc5d68152a956f5…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 04:56:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: fc1e82796af4da1d2fea6bfec536026b SHA-1: ff5a5ce3356bcd1d0c2b43713ec2e3209c28087b SHA-256: cbc5d68152a956f51c8c7ddef1edf41516553512f90835925dcbba098ea4d500
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-card-hack-apk-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/money-cheats-for-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-freeze-players-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/von-roblox-facebook-hacken_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-and-tix-cheat_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/all-roblox-bloxburg-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-script-hack-list_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hacked-text-to-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coinmaster-blogspot_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
stream_002_off00003223.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3223 22664 bytes
SHA-256: a1132612d9c4e4dc9380206189b150d1b83a61b5251f0bc8fddb868458dfc44e
font_01_sfnt_off000064e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64E2 18352 bytes
SHA-256: 7a6741876b8a4f47fa99d807c74985d7cbc04f51e0567589917582e4a0dfbcea

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