PDF malware analysis — malicious · 8257ae5df84e40c9

MALICIOUS

PDF

35.9 KB Created: 2021-06-23 00:36:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 34322d29a19663c01a8f4b1d3baa3155 SHA-1: 10900271eed799b1340c40bfa00b31019a2cb724 SHA-256: 8257ae5df84e40c9e4f7dad4e8f19eeec5609d8b30c1bf55eaaee3f05d0df88d

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/create-vip-server-roblox-free-game-hack PDF link annotation
- https://www.poc-helmet.com/ckfinder/userfiles/files/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/robux-hack-no-human-verification-2021-no-download_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/code-free-robux_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/gain-robux_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/how-to-use-cookie-stealer-to-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/roblox-money-hack_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/zombie-rush-roblox-cheats_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/roblox-hack-v2-11-download_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/free-tiktok-followers-no-verification-or-survey_GM835599320.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/loot-box-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
- https://www.poc-helmet.com/ckfinder/userfiles/files/free-robux-kid-friendly-no-human-verification_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_off00003462.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3462	22568 bytes
SHA-256: `469116ddb4d084b64017ea2220159cf214098272a25eb69fc391a6ab71b976af`
`font_01_sfnt_off000066cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66CD	19296 bytes
SHA-256: `7e059fa9f116c402df1bddf9ec20fd9cc6744c0a5895cb5a0eff0fb8417e01e7`

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