PDF malware analysis — malicious · af73f3e8a21a6bf4

MALICIOUS

PDF

46.2 KB Created: 2021-05-15 06:30:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: b88b9f3397b6d142bc8cd2fa24fa416c SHA-1: 898ad01baee42a52f5ad0ad6a6276a0e48975841 SHA-256: af73f3e8a21a6bf4bbfc0fbcc9531ddf7706ce8393dd61880514660f205d0605

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 https://netcdn.xyz/app/431946152/how-to-get-free-robux-codes-2021-game-hack PDF link annotation
- http://www.elsire.co.in/uploaded_files/userfiles/files/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/roblox-bux-free_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/free-robux-android_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/coin-master-hack-mod_GM406889139.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/robux-fun-hack_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/robux-generator-2021_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/rbx-free_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/freerobux-co_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
- http://www.elsire.co.in/uploaded_files/userfiles/files/how-to-make-a-free-server-in-minecraft-java_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
`stream_003_off00004a98.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A98	30204 bytes
SHA-256: `58c59ff5718cad45cfd1704e44986c2aed954c802097d4867e883eb2474ac1c1`
`font_01_sfnt_off0000908e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x908E	18856 bytes
SHA-256: `204886f9a3a3d456a8ba924f34e84de86e5dda13901e78a872ce278a746af401`

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