PDF malware analysis — malicious · c7bb1c6bfebd1126

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 06:24:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 238edb2f5b85eda9c16577e4b6a0fd4a SHA-1: 333c2dcb8d3b765f318f331064e456469292b870 SHA-256: c7bb1c6bfebd1126fb3f09124f4e32609763bf59b7d3014458d8570a02ac0562

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/431946152/get-free-robux-game-hack PDF link annotation
- http://www.kraftyzone.com/uploaded_files/userfiles/files/all-roblox-hacking_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-claim-robux_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-easy-hack_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-offer-walls_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/descargar-roblox-hack-version-2385-apk_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/tiktok-free-view-500_GM835599320.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/wurst_GM479516143.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-free-spin-game_GM406889139.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/pokemon-go-free-bundle_GM1094591345.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
- http://www.kraftyzone.com/uploaded_files/userfiles/files/10-robux_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
`font_00_sfnt_off00002f22.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F22	22432 bytes
SHA-256: `c12769ba46836aa28c74914a7ddc892a78ddbdfa68c0329eb0d49f508f9b842e`
`font_01_sfnt_off00006145.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6145	18820 bytes
SHA-256: `04d56578d6fa3a791f42370f0ef4c3dea66af1fdc194d67c4390c65d423efb6d`

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