PDF malware analysis — malicious · 95b9396e553811c5

MALICIOUS

PDF

33.1 KB Created: 2021-07-06 03:43:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: a973c9a8c12cf9a13bb3539abae1d107 SHA-1: 4d091a03c16c40cf98461bed89eeaaf86048aa58 SHA-256: 95b9396e553811c5bfc6675aa2c147a0b0244d4aebb94765fc9fc9cf7d7efcf5

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/coin-master-hack-2021-free-game-hack PDF link annotation
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-on-facebook_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/free-roblox-couples_GM431946152.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/robux-app_GM431946152.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/roblox-hack-2021-jailbreak_GM431946152.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/hack-that-thing-roblox_GM431946152.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/free-spins-coin-master-march-2021_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/hack-coin-master-ios_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://mtsn4kukar.com/__statics/gudangsoal/files/coin-master-hack-with-lucky-patcher_GM406889139.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_off00002cfb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2CFB	22148 bytes
SHA-256: `ca28ee9b7d146a77d79eb686bce595528efd4ca1235f7a2eb637d41669bbbc54`
`font_01_sfnt_off00005dc8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DC8	18568 bytes
SHA-256: `df7a437ec40fba4f049db35f275eeb7d22d786e3ebf47b4df0865a8e3590fb63`

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