Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fd4645010d9aa01…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 16:55:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3bf29222d0e408990f2995b57498aeb5 SHA-1: d54395511f961c0fdf9df0a239b25ede4f1c3d6d SHA-256: 3fd4645010d9aa013d47da2581c7a56ad561634fb1156c24b7cd5722f7df8ce8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a lure related to free game currency and hacks for popular games like Robux and Coin Master. It contains multiple embedded URLs that redirect to these lures, suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious with high confidence.

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/how-to-get-2021-robux-for-free-game-hack PDF link annotation
    • https://shjbottle.com/upload/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/chicken-farming-simulator-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/make-free-robux-com_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-posed-golden-ffreddy-roblox_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/microsoft-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-cheat-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/robux-free-c_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBD 22664 bytes
SHA-256: bc8fd8800089c8eec0bc000040b94cb16840f13c3cd2a63c1f4fd6c0097fbb93
font_01_sfnt_off00006179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6179 19384 bytes
SHA-256: d24c0e100c944da15398cc03dd439e143cfc9f9497013523985f2333f6259ff5

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