PDF malware analysis — malicious · dccee7df6efca78f

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 06:21:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 30157dbb8657dd74ead983ae94ffc5ec SHA-1: 43c1741d21142f8105a934f58c99d426ace8488a SHA-256: dccee7df6efca78fb74e1e3a4d42df6edc959c0258c3f8bfea204af51212de7a

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of free game items and accounts to entice users into clicking malicious links. The primary URL, http://netcdn.tw/app/479516143/free-minecraft-accounts-2021-game-hack, is directly linked to a 'game hack' redirector, indicating a high probability of leading to malware download or a phishing page. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure and external URL activity.

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/479516143/free-minecraft-accounts-2021-game-hack PDF link annotation
- https://www.owlweb.co.uk/uploads/files/files/free-robux-without-verify_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-robux-com-real_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-robux-hack-easy-2021_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/robux-only_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/hacks-for-bit-slicer-roblox_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/seniac-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/cheat-engine-hacks-roblox_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/free-roblox-accounts-with-robux-2021-november_GM431946152.pdfIn PDF document text
- https://www.owlweb.co.uk/uploads/files/files/roblox-games-with-free-vip-servers_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_off0000314b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x314B	22108 bytes
SHA-256: `c89b711b2748cf4777aab0d43e3564c8e08ac95078e68822e541cb2ed2df0a04`
`font_01_sfnt_off00006221.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6221	18540 bytes
SHA-256: `282c50d915ee26fc13678eda2596127387576b6bb9c33fe4139c4dae2e8f55f3`

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