PDF malware analysis — malicious · c7b368af0c0333ce

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 02:34:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 1431f68313b78d2a4c095af133fef97a SHA-1: a9833acf56120a83e9717d54e5dea1119b399950 SHA-256: c7b368af0c0333ce90bcd54a5990db2f54dc86b5d9950933bf1f3527e182ce8d

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/479516143/minecraft-java-hacks-game-hack PDF link annotation
- https://www.brightwake.co.uk/uploads/files/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/free-roblox-codes_GM431946152.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/coin-master-hack-online-link_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/get-free-robux-info_GM431946152.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/fbchampion-com_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
- https://www.brightwake.co.uk/uploads/files/files/coin-master-free-spins-app-for-iphone_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_off00004c0e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C0E	24852 bytes
SHA-256: `dd9074f609031fe0d4e4aa42c94878e1fa0c1bc90141efd0223e3c45e38c0387`
`font_01_sfnt_off00008503.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8503	18020 bytes
SHA-256: `2aa5f75731ce228eb108c5d7ba78fcf9c19ee4c9e640e1738d5748e499ff9746`

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