PDF malware analysis — malicious · 468394f6d55c0ca0

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 06:00:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 739346b1427dc3fe9712b7169766c56e SHA-1: f687fe9a16d386afce10e9afa4676a0961ac6b30 SHA-256: 468394f6d55c0ca00b29ed8e3f353e0b02ffca1590ed9fe6445a9870aaae75d7

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack redirector, specifically pointing to a URL promising free spins for Coin Master. The document body and embedded URLs reinforce this lure. While no scripts were extracted, the primary function appears to be directing the user to a malicious external resource via a deceptive link.

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/406889139/free-spins-on-coin-master-hack-game-hack PDF link annotation
- https://www.wco.org.uk/uploads/files/files/free-cods-free-roblox_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/roblox-ultimate-boxing-hack_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/roblox-free-redeem-card-code-2021_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/roblox-free-tix-2021_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/wearedevs-roblox-fly-hack_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/best-roblox-jailbreak-hack-2021_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/free-roblox-passwords_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/roblox-cheats-hacks-free-com_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/roblox-cheat-engine-august-2021_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/free-cruch-skin-for-roblox_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/i-got-cheated-on-roblox-what-can-i-do_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/get-free-robux-just-by-joining-this-group_GM431946152.pdfIn PDF document text
- https://www.wco.org.uk/uploads/files/files/blox-fish-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_off00002ff7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FF7	22920 bytes
SHA-256: `2d96ce59f6105a4aadf9b89ba4c1c9e9b917dbe90f3e6e35c0d2f98fc8a6d061`
`font_01_sfnt_off00006379.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6379	18344 bytes
SHA-256: `9cc65fec0e6e17c64ee19ce37c7fd11c32f0da228a4485440a13819ddf353b1b`

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