PDF malware analysis — malicious · 20507a087c924186

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 12:23:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 6c7f76e5a36f48b0bd549378e40e3b18 SHA-1: 51841af110a201b72dbcdc41d725f9a1c738a0b6 SHA-256: 20507a087c9241865bb4c64a7a0e776c284e0113886b2bc269c2aee68bc3dc01

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links and references to game hacks and free in-game currency, specifically for Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/free-credit-on-roblox-twisted-murderer-game-hack, is flagged as a lure for game hacks. This suggests a social engineering tactic to trick users into visiting potentially malicious websites that could lead to phishing or malware downloads. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a malicious intent.

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/free-credit-on-roblox-twisted-murderer-game-hack PDF link annotation
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-download-wurst_GM479516143.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/obby-games-on-roblox-free-online-games_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/cheat-roblox-mod-menu_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/roblox-re_GM431946152.pdfIn PDF document text
- https://www.shoppingmart.ie/uploaded_files/userfiles/files/free-coin-master-spins-2021_GM406889139.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_002_off00003017.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3017	22656 bytes
SHA-256: `1d17367de2d452d06d6987b8a1e47501de1d4dc96ff478e971b8b1c99403dc0b`
`font_01_sfnt_off000062f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62F5	19548 bytes
SHA-256: `5370f258c9a88fec46cc26888b117cb0fdba09be7e242b286e32ddf800c33ade`

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