PDF malware analysis — malicious · 20c14c5af6534170

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 20:17:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: a0bfb52a52c66044a3d9b58f099109b8 SHA-1: 197714424bf21fd7a7b96f9d08f67681f5fdfe89 SHA-256: 20c14c5af65341709477ea799fb0a842af0baee40121bcfbf05e3b05ceef82e0

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which appear to be SEO-optimized for gaming-related terms like 'Roblox' and 'Coin Master'. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of such links, suggesting a link farm or redirection scheme. The presence of a direct URL to 'rbx-claim-game-hack' further supports the malicious intent. While no scripts were explicitly extracted, the document's structure and numerous external links strongly suggest it's designed to drive traffic to potentially malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/rbx-claim-game-hack
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/coin-master-20-free-spins-link-2021_GM406889139.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/kuso-icu-roblox-hack_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/coin-master-free-coins-facebook_GM406889139.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/free-roblox-hack_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/free-coin-spin-coin-master_GM406889139.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-to-hack-coin-master-ios-2021_GM406889139.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/roblox-com-www_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/facebook-coin-master-free-spins_GM406889139.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/free-robux-no-verification-at-all_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/free-robux-hack_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/rblx-gg-free-robux_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/free-spins-generated-from-coin-master_GM406889139.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/free-promo-codes-for-roblox-2021_GM431946152.pdf
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdf
- https://rblx.land
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004ba0.bin` `256d09539eb4a4afc42c5c1abba33d123f86b02d4b1dabfc9efca2fe91375038`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BA0	25956 bytes
`font_01_sfnt_off00008846.bin` `07c363ffd4f8b13cbf3de9b0a66d92685f9ea0c409a4ceeea91561e0847d81c0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8846	18252 bytes

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