PDF malware analysis — malicious · fc572c7240452c0a

MALICIOUS

PDF

35.5 KB Created: 2021-07-09 23:10:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 9ea50bdfdd767fe2ba30cb7dca5a67cc SHA-1: 85b99bbfae4a0ddf250a1d98681941a5e51e2075 SHA-256: fc572c7240452c0a8e319966482bcefb4d298f14a475ddfa694ab47e0d6d4e42

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a game hack lure, directing users to a suspicious URL. The document body also contains the same URL, reinforcing the lure. Although no scripts were extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a site that likely hosts further malicious content or exploits.

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/robux-gift-card-free-game-hack PDF link annotation
- https://www.nordicstar.co.uk/uploads/files/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-bot-hack_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/appsmob-info-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-roblox-generator-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-gen_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-free-old-accounts_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/robux-com-free_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/what-games-give-you-robux_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-unlimitted-robux-generator_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/robux-now_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-roblox-decals_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/veichle-simulator-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/arsenal-hacks-roblox_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
`stream_002_off0000320c.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x320C	22856 bytes
SHA-256: `9743d67bbe7e149d041c1377ea25a27d4361f32d24e24227449c8ac8cd558c07`
`font_01_sfnt_off00006566.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6566	19112 bytes
SHA-256: `2ea37c508b0c91132d1ae13c4ee486db57383bf0a0a064ac7651587d02fc5b1e`

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