PDF malware analysis — malicious · f65ffb0303c71209

MALICIOUS

PDF

33.4 KB Created: 2021-06-23 05:27:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: d70711fc5e43ba513ebca9f3833f3bd9 SHA-1: 07f36fb39e5de9873558e649fcc9cb62aff81536 SHA-256: f65ffb0303c712097e14d9976b53015378b0be43a24359df9e7a2fa11b83579f

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 0.9824

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.co/app/431946152/free-robux-kids-hack-game-hack PDF link annotation
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/100-robux_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/roblox-games-that-give-free-items_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-roblox-gift-card-codes-unused-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-app-download_GM406889139.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/mm2-roblox-free-seer-codes_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-roblox-website_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-roblox-clothes_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-150-robux_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/coin-master-deals_GM406889139.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
- http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-get-free-premium-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_off00002be7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2BE7	22364 bytes
SHA-256: `2e2bb7f0aab9aaefe2b2fce11ddcf080e996d3cef71ce84f1b025319d96483b5`
`font_01_sfnt_off00005d4d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5D4D	19180 bytes
SHA-256: `63dcf54ffef3946f6f38b11988b8e62eb280d6098c94aeb7525fdc82bf1b4952`

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