PDF malware analysis — malicious · adfaf88b8a026669

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 16:01:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 4a388310ccc67532a001deb726c87eef SHA-1: d349c69824f3550ef7f604ed48479088e80d2139 SHA-256: adfaf88b8a0266691c7184b6c7cbcd9a7cacf153af16586ce2d4ee8d64db27b8

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/431946152/7-year-old-roblox-game-hack PDF link annotation
- https://vieclamjapan.com/upload/files/pastebin-roblox-accounts-hack_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/how-to-get-free-roblox-gear-2021_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/gaming-ultra-roblox-hack_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-fortnite-dances-roblox_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/roblox-redeem-robux_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/doge-hat-roblox-free_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/coin-master-daily_GM406889139.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/earn-free-robux-site_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-dominus-roblox-2021_GM431946152.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/free-minecraft-packs_GM479516143.pdfIn PDF document text
- https://vieclamjapan.com/upload/files/how-to-get-free-pant-and-free-shirt-roblox_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_off000033b9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33B9	22876 bytes
SHA-256: `a8f2c8ca1fd347fd4b8d102be5ab3c651550a42ce3ed66066d3045efb4a4f26b`
`font_01_sfnt_off000065f5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65F5	18880 bytes
SHA-256: `85e4e9e0d9805ef16fec6cb3c84a8d690b5a293c59c21ae1973f218ecc3fb6d4`

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