PDF malware analysis — malicious · ddec8a735497f773

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 01:39:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 94ea4836cf020bad1a632a845797ece1 SHA-1: aacf7f68110bb390cfacdf0c47d5a1696c811f57 SHA-256: ddec8a735497f773c1f6b871ff837fa5a217ba83f1616389b6114e2cceb3a20d

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that appear to be part of a link farm, designed to lure users with promises of free game items or hacks. The ML classifier strongly indicated maliciousness, and the presence of many external links suggests a potential drive-by download or phishing attempt. No scripts were extracted, but the document structure and embedded URLs point towards a social engineering attack.

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/479516143/can-you-make-a-minecraft-server-for-free-game-hack
- http://oca.undil.tl/repository/coin-master-link-for-spins_GM406889139.pdf
- http://oca.undil.tl/repository/blogger-free-spins-and-coins_GM406889139.pdf
- http://oca.undil.tl/repository/coin-master-links-free-spins_GM406889139.pdf
- http://oca.undil.tl/repository/classic-minecraft-net-hacks_GM479516143.pdf
- http://oca.undil.tl/repository/get-free-spins-coin-master_GM406889139.pdf
- http://oca.undil.tl/repository/how-to-get-a-free-dominus-in-roblox-2021-march_GM431946152.pdf
- http://oca.undil.tl/repository/coin-master-70-spin-link_GM406889139.pdf
- http://oca.undil.tl/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
- http://oca.undil.tl/repository/free-roblox-generator_GM431946152.pdf
- http://oca.undil.tl/repository/download-roblox-mod-apk-hack_GM431946152.pdf
- http://oca.undil.tl/repository/minecraft-free-ios-2021_GM479516143.pdf
- http://oca.undil.tl/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdf
- http://oca.undil.tl/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
- http://oca.undil.tl/repository/roblox-pink-free-robux_GM431946152.pdf
- http://oca.undil.tl/repository/coin-master-daily-spins_GM406889139.pdf
- http://oca.undil.tl/repository/roblox-free-no-sign-in_GM431946152.pdf
- http://oca.undil.tl/repository/how-to-look-like-a-hacker-in-roblox-with-rubux_GM431946152.pdf
- http://oca.undil.tl/repository/pokemon-go-free-exp_GM1094591345.pdf
- http://oca.undil.tl/repository/coin-master-hack-apk-facebook-login_GM406889139.pdf
- http://oca.undil.tl/repository/level-coin_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_off000033ea.bin` `432896b8652614a5119d1e984e0eb86984628395961c5dc527c1a3649ccc13d8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33EA	22268 bytes
`font_01_sfnt_off0000656e.bin` `03bb178e0c49e3568f2cf77d55a85f0b2c8e7efb79ff06b17784fbc7992a4997`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x656E	18584 bytes

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