PDF malware analysis — malicious · da83914be1fc79f0

MALICIOUS

PDF

42.0 KB Created: 2021-05-14 23:35:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 449688648e761464a8afa35dfe553049 SHA-1: 5521806721e311eb5051f094181a6741e1f5b006 SHA-256: da83914be1fc79f0f84a9d0ef845007ce71f047d127499e61823703acd8f7c4d

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack redirector, specifically for Coin Master. The embedded URL and multiple other URLs point to sites offering free spins, hacks, or robux, which are common lures for phishing or malware distribution. Although no scripts were extracted, the PDF structure itself contains links designed to trick users into visiting potentially malicious external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-spins-2021-game-hack PDF link annotation
- https://www.maximabm.com/uploaded_files/userfiles/files/get-me-free-robux_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/roblox-skin-free_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- https://www.maximabm.com/uploaded_files/userfiles/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://maximabm.com/uploaded_files/userfiles/files/windows-10-minecraft-hacks_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_003_off0000489d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x489D	24884 bytes
SHA-256: `e15c045e5108cb9b1284fb36ed70b9dcd5e4c28471b5c2e929182b5c7d28a94e`
`font_01_sfnt_off00008192.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8192	18288 bytes
SHA-256: `9f7609fba99e53c6baa99bb04d1c7e3f9b7167131c1520eb2a413cdab4a14871`

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