Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1283c2a470c315c…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 01:42:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c8dc807908da4df530780e454db93f09 SHA-1: 271fb40a91f0f89441c65900d58bdc148d105eb5 SHA-256: f1283c2a470c315c7f7a3bf04c5e952ac872b94897cc2b2fced2da0f7fde49f1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links and references to game hacks and generators for popular games like Roblox and Coin Master. The primary link, http://netcdn.tw/app/431946152/roblox-2021-hack-game-hack, is flagged as a lure for game hacks. This suggests the document's purpose is to trick users into visiting malicious websites that may host malware or phishing content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/roblox-2021-hack-game-hack PDF link annotation
    • http://www.pspmrsmkklawang.com/opac/repository/free-rixty-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-ghost-hack-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-hack-robux-download-pc_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-hack-roblox-with-dll-injector_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-athoi-admin-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/safe-free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-dungeon-quest-noob-vs-pro-vs-hacker_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-hack-bee-swarm-simulator-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/dragon-ball-final-stand-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/coin-master-free-spins-link-ios_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_off00002eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB9 22396 bytes
SHA-256: a490fe7fcec275f9d0db2873f7c8b3dbe089ec6642c846f31b7a0a9aa218c449
font_01_sfnt_off0000607d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607D 19056 bytes
SHA-256: d12ed7f60ab6f0ee9203b204c43922ef7388aa7296366b2a65af9fb0b247c164

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