PDF malware analysis — malicious · 333a65f96d54ac60

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 20:37:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 9996f186ef8be3930524dd02148457c6 SHA-1: a6c9e1ab0960d2841c1832824fc4d54c4cf2e055 SHA-256: 333a65f96d54ac60619cd654ad7e7dea021e536db9548fde466d181a1ca3e1a5

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on 'game hack' lures for popular mobile games like Coin Master and Roblox. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were extracted, the presence of numerous links to external resources suggests the document is designed to redirect users to potentially malicious websites for downloading malware or engaging in phishing activities. 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/406889139/coin-master-card-collection-link-game-hack PDF link annotation
- https://foc.vn/public/upload/files/minecraft-hack-download_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/kazok-roblox-account-hack_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-cheat-robux-fr_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/can-you-hack-peoples-roblox-credit_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-get-robux-for-free-without-cheating-or-hacking_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-hack-diamonds-in-royale-high-roblox_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-hack-character-skin_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-tiktok-views_GM835599320.pdfIn PDF document text
- https://foc.vn/public/upload/files/hack-formum-roblox_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/can-robux-hacks-ruin-your-computer_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/rbx-free-robux_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-roblox-soldier-gfx_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_off0000317a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x317A	22544 bytes
SHA-256: `8ed9858fcf46fe196cc7a5d9e99524a818f8186ef57537636d1a81cf0e21027c`
`font_01_sfnt_off000063df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63DF	18252 bytes
SHA-256: `ffcdde65fbc11ac4564943f1b7ab4cc8ae2466c0ddb41cd48a89f042d41a65fb`

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