PDF malware analysis — malicious · 471e75d9ac953b1d

MALICIOUS

PDF

33.3 KB Created: 2021-06-29 05:35:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: f76bce76779e2413b9fc071da4e7df98 SHA-1: dfda43b4b8d7da05ce9d3507ad19f9df9599c44b SHA-256: 471e75d9ac953b1ddc6e65384cbba6ea3bd4b57d271643eec727aba04abf7a93

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 0.9824

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/roblox-for-free-no-money-unblocked-game-hack PDF link annotation
- http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-hack-tool-download-android_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-hack-roblox-2021-cheat-engine_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-case-clicker-cheat_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/robux-fun-hack_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/codigo-hack-robux_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-robuxcome-hack_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/free-robux-please_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/lien-de-hack-money-pour-mad-city-roblox-seson-3_GM431946152.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.woundcare4heroes.org.uk/uploads/files/files/hacking-code-text-chat-roblox_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_off00002b21.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2B21	22180 bytes
SHA-256: `f43f36f0d1fc42405da5e04f469b8e156d3f20e0ee5b52f86f9e28d214ed9f88`
`font_01_sfnt_off00005c52.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5C52	19372 bytes
SHA-256: `ea01c3257e43f6d0dac86ae287a22b1b248984ccd293a5ef9f3bf7adbd4f8816`

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