PDF malware analysis — malicious · 9ef0ee042ce382f5

MALICIOUS

PDF

44.8 KB Created: 2021-05-16 08:33:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 36add65c452975e64895ebf5bb708892 SHA-1: 4dcb312616663343c86344bf9af69fadb60be2d8 SHA-256: 9ef0ee042ce382f5bc381a2313bd4725fa2171f114dcaf609deb0d50794e84f0

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 0.9632

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 https://netcdn.xyz/app/479516143/minecraft-story-mode-free-game-hack PDF link annotation
- https://linhkien247.vn/public/upload/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/roblox-but_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-robux-come_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/spinuri-gratis-coin-master_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-gifts_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/roblox-free-exploits_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/master-coin-free-link_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-map_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/coin-master-spin-link_GM406889139.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
- https://linhkien247.vn/public/upload/files/how-to-get-free-robux-2021-easy_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
`font_00_sfnt_off00004b7b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B7B	24768 bytes
SHA-256: `9c7be0702f1c135ef373809c648f90e0f3594b7312be6367def083362439d92d`
`font_01_sfnt_off0000834b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x834B	2856 bytes
SHA-256: `8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44`
`font_02_sfnt_off00008d21.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D21	18064 bytes
SHA-256: `5e5fb910f64b2149404149cb3256d61ed755ed43a7017f23b86fa73a2f1502c2`

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