PDF malware analysis — malicious · 83a65bcf57a45900

MALICIOUS

PDF

35.0 KB Created: 2021-06-28 02:45:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: f106b0bcaf244318ae5a781a7ac27606 SHA-1: 9ef63e1225173bf82d0a442e8b5a74b8640e2677 SHA-256: 83a65bcf57a4590034fe1dfa0a051b191a09a85b6b03d3acf31d9ff4204959be

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.co/app/431946152/roblox-a-free-model-makes-me-teleport-to-another-game-game-hack PDF link annotation
- https://www.advancissurgical.com/uploads/files/files/roblox-apps-info-hack-generator_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-roblox-mods-jailbreak_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/op-rewards-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-now_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/free-robux-teleplate_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/tiktok-likes-free-trial_GM835599320.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/working-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/www-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/roblox-install-free_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/play-for-free-robux-roblox_GM431946152.pdfIn PDF document text
- https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-easy-no-download_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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000303f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x303F	22128 bytes
SHA-256: `65e28d1afa6e07589d01378918384c847027002311660119aaf46978e02c2999`
`font_01_sfnt_off00006154.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6154	19896 bytes
SHA-256: `315b4c99a8459cfdda39064985a7dbd3cd19dd94ae288c45e77c09cafa56d477`

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