PDF malware analysis — malicious · 7a2bec39786409e6

MALICIOUS

PDF

37.0 KB Created: 2021-07-03 19:31:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 30d9bbc5eea643ff56877a157487736f SHA-1: dc27166252da8dc43fda9788a6a4047e3ca3947c SHA-256: 7a2bec39786409e61111c22f2c94dc6a4d339e6bc9e2ae5117a424bda623d627

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/freegames911com-coinmastertipsandcheats2021freecoinsandspins-game-hack PDF link annotation
- https://www.sarsen.net/uploads/files/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-app_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/roblox-hack-client-2021-wrd-cbx_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-code-that-everyone-can-use_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-free-robux-no-password-2021_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-roblox-hided-head_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-minecraft-addons_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/comment-hacker-adopt-me-dans-roblox_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/hack-nuevo-para-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-hack-apk-free-download_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
`font_00_sfnt_off00003947.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3947	22468 bytes
SHA-256: `fed6810603666325ab189eca72b70190abaa0c171d6813441107875b11151d38`
`font_01_sfnt_off00006b24.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B24	19340 bytes
SHA-256: `336cd4fe356f1d557bb7c81c630fbec16c59259e54990c4d97f24f313c3c71ee`

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