PDF malware analysis — malicious · c8c680538bfeffc3

MALICIOUS

PDF

44.9 KB Created: 2021-05-16 08:04:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 2601322d01109bed5704660ba382929d SHA-1: 8594867e1d05d271271d010459ecc546773b2d5f SHA-256: c8c680538bfeffc33004e52afaee4964a9c5bc80c131c753bcaeaecdabe15255

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 0.9632

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/431946152/free-robux-net-game-hack PDF link annotation
- http://www.centromedicoaurora.it/images/e-free-roblox_GM431946152.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/instant-robux_GM431946152.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/install-free-game-coin-master_GM406889139.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/optifine-minecraft-pe_GM479516143.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/free-private-minecraft-server_GM479516143.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/roblox-com-hack_GM431946152.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/can-u-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
- http://www.centromedicoaurora.it/images/how-to-earn-free-stars-on-coin-master_GM406889139.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_off000044ee.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x44EE	26584 bytes
SHA-256: `7d8a32f2d51182346cc9f2ab3a01f3b4405ed9d0271961244e01aaa872481279`
`font_01_sfnt_off0000800e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x800E	4088 bytes
SHA-256: `4f141f55f237a838931c4ad9ba4e4706edfbef4941762b48bb94b307b84edeba`
`font_02_sfnt_off00008d7f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D7F	18120 bytes
SHA-256: `1fd200dee0908774cd7421e0a60456d96d7b5616485fa29449c155c3981f88c9`

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