PDF malware analysis — malicious · cd3c1db2af5bd80d

MALICIOUS

PDF

45.9 KB Created: 2021-05-12 15:38:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 69c09cd3fb9f1e0bb648eb04eb219e36 SHA-1: 0cb69674581f41a41e589048d500ffe5fdfb337d SHA-256: cd3c1db2af5bd80d5105c61fc68160618c0bfdc5d529b0df99c3efd62efc591b

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs, with a primary focus on luring users with game hack and free item generators. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of URLs like 'https://netcdn.xyz/app/479516143/what-is-a-minecraft-client-game-hack' strongly indicate a phishing or malware distribution attempt. The document body, though partially corrupted, also contains references to these lures.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/479516143/what-is-a-minecraft-client-game-hack PDF link annotation
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/ear-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-roblox-avatar_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/inappropriate-roblox-games-2021_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/flip-master-coins-hack_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/coin-master-mod_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/free-coinmaster-spins_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.nordicstar.co.uk/uploads/files/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://youtuIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004ccb.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CCB	25784 bytes
SHA-256: `0742fcb1794c1d3a605a1ea7740329476ea7d94dda39d696738ad0fb810a723e`
`font_01_sfnt_off000087a6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87A6	3128 bytes
SHA-256: `801f6fa60decd1add2f223f91580103c35e150c924465f86a7a572b3e00674f9`
`font_02_sfnt_off000091e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91E5	18008 bytes
SHA-256: `f402f21c661d1e01b215e02d2fc5d7c867c0257932a901a78bdda083b1da0465`

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