PDF malware analysis — malicious · 19ccf67f656ce85b

MALICIOUS

PDF

34.2 KB Created: 2021-07-08 18:28:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 7f68030292c833cc266b2857c968ca4d SHA-1: 5067a7d56b97cf1a5a51a187883a7534805bd0a0 SHA-256: 19ccf67f656ce85b5f60fae81615b71ec946118724d3b9367a1ff6a99c12edba

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.tw/app/431946152/boku-no-roblox-hack-game-hack PDF link annotation
- https://www.toyogas.com.tw/upload/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-cheat-codes-for-robux-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-get-free-shirts-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-stuff-catalog-roblox_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-be-a-roblox-hacker-and-hack-accounts_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-hack-video_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-prison-life-v2-0-hack-exploit_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-just-sign-in_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-accounts_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_off00002f56.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F56	22352 bytes
SHA-256: `3483de794028517d4781d5418ac1037ac8236289e0b011a4600215bd1ced588f`
`font_01_sfnt_off0000611a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x611A	18796 bytes
SHA-256: `19135353552efac95f1c00fc10c19e7b17473ce31d967bef669c8f4fb6ca84ac`

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