PDF malware analysis — malicious · 1c7b34344640e99e

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 14:15:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 0efa08b2c03541ff058e6dca1f22653d SHA-1: 184b7a5ea47a496ac7b6ceacdd6926201a719f73 SHA-256: 1c7b34344640e99e0fc9daad6587ccfa027b242e5ac286c3a15e16c9e20bcc18

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 0.9980

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 http://netcdn.tw/app/406889139/is-coin-master-free-game-hack PDF link annotation
- https://maths-pdf.fr/ckfinder/userfiles/files/free-red-hoodie-roblox_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/what-to-do-when-you-are-hacked-on-roblox_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/fly-hack-roblox-lumber-tycoon-2-francais_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-play-online-free_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/roblox-jailbreak-hack-2021-april_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/hack-de-roblox-btools_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/bux-free-robux_GM431946152.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-support_GM406889139.pdfIn PDF document text
- https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-net_GM431946152.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_002_off000030c2.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x30C2	23044 bytes
SHA-256: `a1531db53e0b935ce3aadeb4ed9e35b786a4e0a3d7d5dc11fcb54298206e016e`
`font_01_sfnt_off0000646a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x646A	17996 bytes
SHA-256: `51c7c1181202281cc4ee9307e7b94c29137a8eb38afeb9429a7c3d80b7fecf33`

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