PDF malware analysis — malicious · c30ff63a0835af5b

MALICIOUS

PDF

35.4 KB Created: 2021-07-07 17:58:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: aaf25346d8526673cdfc89752eb0da3f SHA-1: ffcf0805d398ca60f16342e15df55adbd1541708 SHA-256: c30ff63a0835af5bece162d1edf36bbf23c44eb31ec62eb27a94da44e541fc76

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks and free currency, directing users to the URL http://netcdn.tw/app/406889139/links-to-get-free-spins-on-coin-master-game-hack. This URL is likely part of a phishing or malware distribution chain. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, but the PDF structure and embedded URLs suggest it's designed to trick users into visiting a malicious site.

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/links-to-get-free-spins-on-coin-master-game-hack PDF link annotation
- https://diendientuvn.com/public/upload/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/comment-devenir-un-hacker-sur-roblox-2021_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-builders-club-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-have-free-robux-2021-and-exemple_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/fulflex-roblox-hack_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-become-a-real-roblox-hacker_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-executors-for-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-codes-2021-february_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-clothes-promo-codes-roblox_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/infinite-jump-roblox-download-free_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/daily-coin-master-link_GM406889139.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/hptts-webrobloxcom-games-2021202114-getrobustfreehere_GM431946152.pdfIn PDF document text
- https://diendientuvn.com/public/upload/files/roblox-games-that-cheat-engine-works-on_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_off000033ca.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x33CA	23020 bytes
SHA-256: `7ca0fc22c50f675268390ad97ed87f6471e01b0559bc563459310e53268b98ef`
`font_01_sfnt_off000067a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67A3	18344 bytes
SHA-256: `1dde3a634a35d4e9c8cc8702715575f7350bc413b734fd9f7bac35511dc11ac3`

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