PDF malware analysis — malicious · 84668cb70407ff9d

MALICIOUS

PDF

47.4 KB Created: 2021-05-16 02:11:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: da5d816ee7425f282b85fbc626017606 SHA-1: 486abc3d3d8b65830305bd66814f7219d162c9c0 SHA-256: 84668cb70407ff9d09a15cf0c5b7b7a5e95a22b2b9f201e9d65ac810cf988b58

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 0.9013

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/how-to-get-free-spins-on-coin-master-blogspot-game-hack PDF link annotation
- http://kovroff.com.ua/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/free-robux-script_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/roblox-assassin_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/roblox-hack-generator_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/free-robux-com-2021_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/roblox-hack-codes_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
- http://kovroff.com.ua/images/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://kovroff.com.ua/images/roblox-cp_GM431946152.pdfIn PDF document text
- http://kovroff.com.ua/images/free-robux-no-verification-or-survey-2021_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_off00004c5f.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C5F	27084 bytes
SHA-256: `72293eefa041281e18412051410709ac6b59a388d83d7a49e9ebe78a12321ee6`
`font_01_sfnt_off00008bab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BAB	2916 bytes
SHA-256: `edf837a652ad2e565e725c6192e58cf4ef8e5ad79b40c0fc75b3472c61dc6c06`
`font_02_sfnt_off000095c4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95C4	18628 bytes
SHA-256: `dffdff87eeabeaf08b6b0d7b886c4f721907d6ee2cd896e9e47cad489ce70e41`

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