PDF malware analysis — malicious · 4f871d044c686f72

MALICIOUS

PDF

35.5 KB Created: 2021-05-17 04:00:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: b92ef78dcbe0e6d728c8496ea8932de7 SHA-1: ddbb075a349a9654ce2edda9323c1cf5b9c33f97 SHA-256: 4f871d044c686f720fc684161d507720b1ca3b0e47e119b96146fe67b6565145

74 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of game hacks and free in-game currency to entice users. It contains multiple links to external websites, including one identified as a 'free generator / game hack' redirector, suggesting a phishing or scam attempt. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment that it is designed to lead users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 3

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.
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/406889139/coin-master-free-cards-hack-game-hack PDF link annotation
- http://www.khneisser.ch/uploaded_files/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/minecraft-aimbot_GM479516143.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-xbox_GM479516143.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/roblox-rape_GM431946152.pdfIn PDF document text
- http://www.khneisser.ch/uploaded_files/userfiles/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004af9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4AF9	27740 bytes
SHA-256: `a3d1020a8f9b1ca9b94bf881565ea2dd8b19d18c44a5122fe8e2c8b8f453bf67`

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