PDF malware analysis — malicious · f4ddd69d73b85c37

MALICIOUS

PDF

45.1 KB Created: 2021-05-13 02:36:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: c091c819578d12563f0db02c2a3d33f0 SHA-1: 22de95cbc17518f8de8e41c17c992d662ea50360 SHA-256: f4ddd69d73b85c37f6a22db9496fbc71c71edecef8fb5cf7b395cb71c5cd2bab

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 0.9621

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-hack-link-2021-game-hack PDF link annotation
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-free-spins-link-without-human-verification_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-robux-master_GM431946152.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-robux-games_GM431946152.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
- http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a22.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A22	25436 bytes
SHA-256: `e63fbfec35da9b9376eab7085d9a2989015b7d38dfa93642a7185ada66d6a4fa`
`font_01_sfnt_off00008431.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8431	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008de3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DE3	18116 bytes
SHA-256: `25e00f41f2782f9bb0485ec3dace01d1d73ef8bc3473ddf3ed3584f1f3c729b7`

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