PDF malware analysis — malicious · 61e13a5024e81351

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 15:38:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: db0e1a347a08583c104c12941dcb5a1b SHA-1: 55f7c117f8ae50604be1bde1197062cf45186d89 SHA-256: 61e13a5024e8135164b1d924cae5aac6bc595b51d85e5eb5cf083cf1684d334a

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/free-robux-without-doing-anything-game-hack PDF link annotation
- https://www.toyogas.com.tw/upload/files/there-are-secret-ways-of-getting-free-robux_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/uribx-club-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/treasure-hunt-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-roblox-login-password_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/roblox-hack-apk_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-village-4_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/bubbly-animation-roblox-free_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/how-to-get-free-robux-in-a-easy-way_GM431946152.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
- https://www.toyogas.com.tw/upload/files/play-minecraft-pocket-edition-for-free_GM479516143.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_off00003236.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3236	22228 bytes
SHA-256: `13cff21534594e51ddc260e1ae430f5726d9a6e01c91f4658d77c638fa64d741`
`font_01_sfnt_off000063d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x63D0	19652 bytes
SHA-256: `175c8a58e8e169f12273aafb2eda495858213246dee116a0d68e3e1da0577e93`

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