PDF malware analysis — malicious · 1b1a970d115de2a6

MALICIOUS

PDF

43.8 KB Created: 2021-05-11 19:21:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 0291980781df284a738cb36c250eed0d SHA-1: 219e293947c1f9f34c879af260ac23dab5ea976f SHA-256: 1b1a970d115de2a6df1169cf5bbe7af052b656a8e4044ff1504fb4cb314ed234

182 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to external websites, many of which appear to be part of a link farm designed to attract traffic through SEO manipulation. The document body and heuristics indicate a lure related to game hacks and free generators, directing users to potentially malicious content. The presence of a 'clipboard command execution lure' suggests an attempt to trick users into executing commands, though no specific commands were extracted.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

Heuristics 6

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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.
Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE

Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
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/479516143/can-you-still-get-minecraft-windows-10-for-free-game-hack PDF link annotation
- https://loba.com.vn/public/upload/files/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coins-master-hacks_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-roblox-hack_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-free-spin-ml_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
`font_00_sfnt_off00004d29.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4D29	25620 bytes
SHA-256: `72c73e371ae320e849a5b6018bbf42845bf5d3cf0d4efb9ad086b0b57005c8dc`
`font_01_sfnt_off000086ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86EE	18900 bytes
SHA-256: `034db505498ac8c8519d8237c8b18b5343e7da842d12f3a540d738a1fb4a7f0f`

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