PDF malware analysis — malicious · f3d5b45c1b97e164

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 08:39:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 62ff0b40c159b8c3d9c6c74802ba27a6 SHA-1: 5d373754a0c13bbe9fad035867e32ab015190744 SHA-256: f3d5b45c1b97e164eebd4757dfbd71462ba352c444349707f9a9d4ec6d4e3489

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 0.9865

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.online/app/406889139/coin-master-mod-apk-2021-game-hack PDF link annotation
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/master-coin-hack-mod_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/give-free-robux_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/rewards-robux_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-nerd-glasses-roblox_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/coin-master-free-spins-cheat-codes_GM406889139.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/www-robux_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/rbx-robux_GM431946152.pdfIn PDF document text
- https://www.shaillybeauty.com.au/uploaded_files/userfiles/files/free-robux-no-human-verification-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
`stream_004_off00004fde.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FDE	24820 bytes
SHA-256: `9bdfe83ec4f5f141f65d1d9564ab38a47d51c80853e903f01c8c6bd3afe83dab`
`font_01_sfnt_off0000894b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x894B	18468 bytes
SHA-256: `3a864882e9e4289fde3385ccd09838686b667c82d90ee6c78e630994fecff89f`

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