PDF malware analysis — malicious · 0ed40c0d18120511

MALICIOUS

PDF

35.5 KB Created: 2021-07-04 09:23:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 6fb83ff0100dd5455d0fd58e66ca0346 SHA-1: c893035d05fc7805497a838959bc58e69f47ea5a SHA-256: 0ed40c0d1812051148ebe848586168a296a176e20b2630b1a1d42518a464ffcb

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized and promise hacks or free currency for popular games like Roblox and Coin Master. The presence of a "PDF_SEO_LINK_FARM" heuristic firing and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content. The document body itself contains text related to these game hacks, reinforcing the lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/how-to-make-robux-on-roblox-game-hack
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/roblox-hacks-2021_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/roblox-hack-no-download-no-survey-no-password_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-food-on-coin-master_GM406889139.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/roblox-md5-hack_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/jailbreak-script_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/minecraft-servers-that-allow-hacks_GM479516143.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/is-windows-10-minecraft-free_GM479516143.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/robux-sites_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/free-robux-co_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/roblox-kostenlos-robux-hacken_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-coins-twitter_GM406889139.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-pc-2021_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdf
- https://www.sman3amlapura.sch.id/new/public/ckfinder/userfiles/files/coin-master-claim-free-spins_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003343.bin` `210bff31bf0860c9d519e37dd06e7730cbea6cc20f60e927296c03d9b45810ae`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3343	22484 bytes
`font_01_sfnt_off0000655e.bin` `128e60f715d7afbef12cda7c0144ab11bcbc803adac1d8a1b7c03f335231ca57`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x655E	19156 bytes

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