PDF malware analysis — malicious · d14dbed96c1d4600

MALICIOUS

PDF

38.0 KB Created: 2021-07-06 04:16:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 9c2807ed4858492e84b46b00b406a077 SHA-1: d0a7635d2947a561245b7cc7679188c31249194a SHA-256: d14dbed96c1d4600e5edb5ecf0556d422be55c01ad3f5fbc2f70aa604d03dd21

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded links, identified as a link farm, pointing to external resources. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure suggests an attempt to trick the user into clicking these links. The primary URL, http://netcdn.tw/app/406889139/coin-master-free-spins-11-01-2021-game-hack, likely serves as a gateway to a malicious payload or scam.

Machine Learning

Nyx PDF Classifier malicious score 0.9886

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/406889139/coin-master-free-spins-11-01-2021-game-hack
- https://www.modestuae.com/uploaded_files/userfiles/files/where-pokemon-go-free-download_GM1094591345.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/25-free-spins-coin-master_GM406889139.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/knife-hack-for-assassin-roblox_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-apk-hack-download_GM406889139.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/free-roblox-back-accessories_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-computer-no-human-verification_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/free-coinmaster-spins_GM406889139.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/robux-hack-xonnek_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/how-to-make-a-custom-rthro-for-free-roblox_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/roblox-free-zombie-face_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-hack-xyz_GM406889139.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-generator-without-human-verification_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/minecraft-java-edition-key-free_GM479516143.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-only-username-and-password_GM431946152.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/get-more-free-spins-on-coin-master_GM406889139.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/free-coins-on-coin-master_GM406889139.pdf
- https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-no-human-verification_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000031db.bin` `2ce1166675921e2def4e3f2dd98edf82d38f371459317fecc4229f8ac0d58cf5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x31DB	23368 bytes
`font_01_sfnt_off000066e3.bin` `c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66E3	2896 bytes
`font_02_sfnt_off000070c8.bin` `dc15c9aca5ee2f3edaf4f3f3393a78df3b5581a7d23d310761b394b7c3bd0baf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x70C8	18576 bytes

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