PDF malware analysis — malicious · 725677af2ebe7fda

MALICIOUS

PDF

51.3 KB Created: 2021-05-13 13:29:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 306952a1aa220a97995bae3138f20768 SHA-1: cf91ce79f982304c350733d1fca3fe1f8c2a3e66 SHA-256: 725677af2ebe7fda80179523b06c63799f7260cf4dcca2dd902f5a3664b28512

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 0.8646

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/descargar-coin-master-hackeado-game-hack PDF link annotation
- https://www.devries-group.de/images/free-100-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-robux-reddit_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/robux-only_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
- https://www.devries-group.de/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/actual-free-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-free-spins-and-cards_GM406889139.pdfIn PDF document text
- https://www.devries-group.de/images/roblox-hack-download_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.devries-group.de/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004c89.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C89	25916 bytes
SHA-256: `12787e53a3522774f7b6fcb1efec28d452b23ff54ce7a368f1adefc7c2282b3a`
`font_01_sfnt_off00008874.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8874	3400 bytes
SHA-256: `4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07`
`font_02_sfnt_off00009399.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9399	7332 bytes
SHA-256: `d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d`
`font_03_sfnt_off0000a5b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA5B2	18344 bytes
SHA-256: `f36247ffb38554f38145ddbd5964f7161795fb102c5bcaad17a29f5e2fd4ae9a`

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