PDF malware analysis — malicious · c86e4b45ef3f646f

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 03:16:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 046f99cd55d76039830cc8c33b331a5f SHA-1: a9f85210fe857eb30339109ab3642f42f9168cdb SHA-256: c86e4b45ef3f646fa86504ec44b1f03176e4025414540401e2e181416f76c59a

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.co/app/431946152/husky-roblox-free-robux-link-game-hack PDF link annotation
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-free-bux_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/april-fools-hack-2021-roblox_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-workink-downloadable-roblox-avatars_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-roblox-codes-october-2021_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-rape-cheat_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-robux-hack-download-mac_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/hack-de-velocidad-roblox-booga-booga_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-live_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-spin-redeem-code_GM406889139.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_off00002f2b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F2B	22284 bytes
SHA-256: `0a09480d216c11d4afe65c75a01d994a93b592bc01754752da3b300d834ef6ab`
`font_01_sfnt_off000060bd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60BD	19260 bytes
SHA-256: `6bf9cbaaef3cd3f0273e802ca89838b1bb8dad207c099b83531f9e62dd463180`

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