PDF malware analysis — malicious · c8ad2dde7358bf83

MALICIOUS

PDF

42.8 KB Created: 2021-05-17 16:33:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 936fd617a34b216ca35a095dad2b0f19 SHA-1: 2d21668d0f867ac0f74c380c801d6d8d791528e3 SHA-256: c8ad2dde7358bf83a7fdf5f84fab8073503bfd61d728ba965fc1e693fad44b7a

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 0.9971

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-viking-quest-hack-game-hack PDF link annotation
- http://casabea.de/images/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
- http://casabea.de/images/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
- http://casabea.de/images/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
- http://casabea.de/images/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
- http://casabea.de/images/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
- http://casabea.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- http://casabea.de/images/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
- http://casabea.de/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
- http://casabea.de/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- http://casabea.de/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
- http://casabea.de/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
- http://casabea.de/images/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
- http://casabea.de/images/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
- http://casabea.de/images/hack-coin-master-apk-32_GM406889139.pdfIn PDF document text
- http://casabea.de/images/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
- http://casabea.de/images/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
- http://casabea.de/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
- http://casabea.de/images/get-robux-com_GM431946152.pdfIn PDF document text
- http://casabea.de/images/mcpe-optifine_GM479516143.pdfIn PDF document text
- http://casabea.de/images/free-spin-codes-coin-master_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
`stream_003_off00004b40.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B40	25120 bytes
SHA-256: `02104bc1b17bee3af0fd149e61f19a3929e2027d565ca7c519aee46764fe78c3`
`font_01_sfnt_off00008457.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8457	18436 bytes
SHA-256: `cdd7d2044fff2b3d5d42961dfcf560b0c02369c6689bd16c26f5d034f53f0ba6`

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