PDF malware analysis — malicious · 99a586a9a3d40464

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 11:27:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: a84e3bef791f0c4bbed98432f686fa70 SHA-1: 68096acd5624e5739b6fc14b30f48f0659aa693f SHA-256: 99a586a9a3d404645fcb89438ce2ad89e8b70ced273fe4fe1283f25b82dc1eab

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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-spins-generated-from-coin-master-game-hack PDF link annotation
- https://www.stomatoloska-ordinacija-rijeka.com/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/roblox-robux-online-hack-no-human-verification_GM431946152.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/free-robux-edit-html_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/how-to-create-group-in-coin-master-free-spins_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/how-to-hack-roblox-bloxawards_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/free-robux-for-free-generator_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
`font_00_sfnt_off000033a0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33A0	22892 bytes
SHA-256: `91f01c11cb4ec059870fe067e05f08a72eb42362c50a9d70e9c41c22e89da133`
`font_01_sfnt_off00006709.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6709	18608 bytes
SHA-256: `f3b8872e4898f4f62f1c2381ef3c416df0d2c6af9c073f51721df25e5e0a3b28`

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