PDF malware analysis — malicious · 821d72f2fd2ff935

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 08:44:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 987d0a134aad558063c821a3abc8c8b2 SHA-1: dd9d6b79b2360474c31dc84b58215bb6f719ccaa SHA-256: 821d72f2fd2ff9351e65756dafc78b602ddd6fc70e846392ad691551e5e567e5

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/roblox-cheat-speed-run-game-hack PDF link annotation
- https://sensorcamera-tw.com/upload/files/treasure-hunt-hack-roblox_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/como-hackear-robux-en-roblox-2021_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/haha-how-to-get-free-robux-without-scam_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/robux-codes-free-2021_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/comment-hacke-roblox_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/minecraft-images-free_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-robux-troll_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/minecraft-font-free_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/how-to-upgrade-roblox-for-free_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/free-robux-only-username_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/how-to-fly-hack-in-tower-of-hell-roblox_GM431946152.pdfIn PDF document text
- https://sensorcamera-tw.com/upload/files/csgo-roblox-hack-script-pastebin-2021_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_off0000303b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x303B	22232 bytes
SHA-256: `c6bbc8584813fd602aeda13a61595abb643bb03419943835b81e7bdf48806b2e`
`font_01_sfnt_off0000614c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x614C	19248 bytes
SHA-256: `aea1b29e93265bdb74c169eb0c389f383dfcc990434b248b97655a57713b1a5c`

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