PDF malware analysis — malicious · c510d03064244ba7

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 21:53:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 1e78d369f74fe0d0e6cd84cf9d3c9d44 SHA-1: 91bff1da587dd01eaff2c22d4bc453eb78110377 SHA-256: c510d03064244ba7e78baf063e169eae82b055cd279fb8290429ffe4759d4aa8

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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-spin-links-coin-master-2021-game-hack PDF link annotation
- http://www.nelsonssales.com/media/storage/editor/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/roblox-hacking-kazuin_GM431946152.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/free-minecraft-server_GM479516143.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/roblox-robux_GM431946152.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/roblox-speed-hack-android_GM431946152.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/tiktok-free-use_GM835599320.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/give-free-robux_GM431946152.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/free-roblox-well_GM431946152.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/pokemon-go-free-xp_GM1094591345.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
- http://www.nelsonssales.com/media/storage/editor/files/when-was-minecraft-free_GM479516143.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_off0000311e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x311E	23572 bytes
SHA-256: `04d3a267312121a92351adfbea6af5f942e49b21e2a19ce09d0af796ca5eaaac`
`font_01_sfnt_off000066c2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66C2	18748 bytes
SHA-256: `555fafd707981bb0c6b7001b1be3c97ebfd68a2129e30489c690262ca59c48f6`

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