PDF malware analysis — malicious · 52072a8b5825bb01

MALICIOUS

PDF

44.5 KB Created: 2021-05-14 05:14:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 60f6ee692cfc2fc5f64df1475c5b1055 SHA-1: 926b395f62eb2a3e852fa498d14de61f331d44fa SHA-256: 52072a8b5825bb01aadb07711eb6869dc7009dafa12e926da0cd3cd2289a0f07

122 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.9632

Heuristics 5

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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 https://netcdn.xyz/app/406889139/free-coin-master-spin-and-coin-link-game-hack PDF link annotation
- http://ghegamethu.vn/images/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
- http://ghegamethu.vn/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- http://ghegamethu.vn/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/robux-free-com_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
- http://ghegamethu.vn/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/aimbot-exe-roblox_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/robux-match_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
- http://ghegamethu.vn/images/hack-coin-master-apk_GM406889139.pdfIn PDF document text
- http://ghegamethu.vn/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- http://ghegamethu.vn/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://ghegamethu.vn/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
- http://ghegamethu.vn/images/roblox-free-accessories_GM431946152.pdfIn PDF document text
- http://ghegamethu.vn/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://ghegamethu.vn/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000048b3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48B3	24696 bytes
SHA-256: `403b93d8e5a19e22f014df5922cbb699f3f165152d577e37bac45da35d41896c`
`font_01_sfnt_off00008184.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8184	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00008b6f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B6F	18228 bytes
SHA-256: `033fb27de386422edfdfffc04f89508c7363de2f22c7244a0850c98a16a8d6aa`

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