PDF malware analysis — malicious · bef2c670df846e4f

MALICIOUS

PDF

33.1 KB Created: 2021-07-05 01:28:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 168d9d7d9fbe55f60f7078a9005251d1 SHA-1: dd67ccd8e491b248fb1a3a0630fb1ba5c0233eb7 SHA-256: bef2c670df846e4f2bc846bf12008e8b99a7677c8f2ff86099f4bffe9ad40c97

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/479516143/minecraft-for-ipad-free-game-hack PDF link annotation
- https://www.toyogas.com.tw/upload/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/minecraft-launcher-free_GM479516143.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/find-people-in-roblox-cheat_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-hacks-jailbreak-download_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/food-empire-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/hack-roblox-pc-youtube_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-on-iphone-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-roblox-game-card_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-hack-robux-2021-download_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-change-your-name-in-roblox-for-free_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_off00002d49.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2D49	22412 bytes
SHA-256: `1ddc3bbeb683e8d1a5a5a0daf877714c5bfde14b86cd498233e14964a4fdd75d`
`font_01_sfnt_off00005e60.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E60	18348 bytes
SHA-256: `77fda35481488166b96b2314590ed1bd84082cd679e1d5b9431d2b2ae4521319`

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