PDF malware analysis — malicious · 8170aa2551e1fca7

MALICIOUS

PDF

45.6 KB Created: 2021-05-10 20:30:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 3a5835226102df7a423544e606b4759a SHA-1: b4deae34fedb297f226e86a08d8973c3192eae25 SHA-256: 8170aa2551e1fca79b080b519d8df58f812646c5e38b5b3f03fbc6c421f2fb6f

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that promise game hacks and free in-game currency, a common lure for phishing and malware distribution. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a 'game hack redirect lure' heuristic further supports this assessment. No scripts were extracted, but the document's structure and embedded links indicate an attempt to redirect the user to malicious content.

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/free-robux-no-human-verification-2021-game-hack PDF link annotation
- http://paro.net.ua/images/blox-rewards_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-freebies_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/free-premium-roblox_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-hack_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/mcpe-hack-client_GM479516143.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/daily-coin-master_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/free-robux-instantly_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/minecraft-java-hacks_GM479516143.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/coin-master-2021_GM406889139.pdfIn PDF document text
- http://paro.net.ua/images/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/easypoints-gg-roblox_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
- http://paro.net.ua/images/free-minecraft-codes_GM479516143.pdfIn PDF document text
- http://paro.net.ua/images/what-games-give-you-robux_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_off00004768.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4768	30860 bytes
SHA-256: `991579720d3479af81ad9515b581d254df21a7039449d390698116c43a0bb586`
`font_01_sfnt_off00008cf9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CF9	19260 bytes
SHA-256: `6a9b2633b50d097f4b127a07737bc979a0fc1726e0f4efc9f53c1be2676c3116`

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