PDF malware analysis — malicious · e8daf09d5caae267

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 18:13:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 4c7a8069500611c40d37fb15060fdf8d SHA-1: 99f9ff1132cdd3562746764efad3e805749b2280 SHA-256: e8daf09d5caae267fe79b09e94ec77e8054b9de0e88dc127554cec3ff50cf723

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-risk heuristic firing for linking to a 'free generator / game hack' redirector, specifically http://netcdn.tw/app/431946152/microsoft-free-robux-game-hack. This lure is designed to trick users into visiting a site that likely serves malware. The document body and embedded URLs reinforce this theme of game-related scams.

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.tw/app/431946152/microsoft-free-robux-game-hack PDF link annotation
- https://www.owlweb.co.uk/uploads/files/files/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-robux-clothes_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/how-get-free-items-in-roblox_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/legit-free-robux-no-verification_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/roblox-hacking-gameq_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/how-to-download-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/add-robux_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/can-you-use-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/rbx-free_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/obc-hack-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/roblox-free-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_off00003027.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3027	22632 bytes
SHA-256: `06fe44211e659202d52e7e727a8e2c915f6aa65d3d3406fa25a6da86f9409b1c`
`font_01_sfnt_off00006257.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6257	19136 bytes
SHA-256: `eceba35cd6627b8fd8c95b6fc578f752ad37bdbc88f79a1a211c8d87d48b0e2f`

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