PDF malware analysis — malicious · 8d3921e54c050403

MALICIOUS

PDF

45.9 KB Created: 2021-06-09 10:34:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: a7a3e2cde6f99662828740f8013a26fa SHA-1: 9f735076caa639ea34fc04224a81b1d53e33ce05 SHA-256: 8d3921e54c0504032fd5e2dc82db40831427649f5a4348be3cd7a23f7395b1c7

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are designed to lure users into downloading game hacks or cheats, such as 'roblox-cbro-skins-for-free-game-hack'. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent. The document likely serves as a lure to download a second-stage payload or redirect to a phishing site.

Machine Learning

Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/roblox-cbro-skins-for-free-game-hack PDF link annotation
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/hack-downloads-for-roblox_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/master-game_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/can-i-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/wurst-112-2_GM479516143.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-club-hack_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/coin-master-free-download_GM406889139.pdfIn PDF document text
- http://www.reyhanceliker.com.tr/theme/images/ckeditor/files/roblox-speed-hack-not-patched_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_004_off000055b9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x55B9	26396 bytes
SHA-256: `f5abb440c734d0f05e951b607b2249e71f7f808b85dc9f574f7ef17ea41987e3`
`font_01_sfnt_off0000915d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x915D	18236 bytes
SHA-256: `752b7c5b5f555a38b4bb47eab7c37c3a95505ed7df3b99f2a4354a50e65cd660`

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