PDF malware analysis — malicious · 23b3da9004228fc3

MALICIOUS

PDF

42.5 KB Created: 2021-05-12 21:00:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 11064a8b5ebe5b94187a7a3b7c0f2f6e SHA-1: 91d816339d4133dfe77a1f2e242f8d0f477f19b5 SHA-256: 23b3da9004228fc3a8e9d5712e0ce4d8753a09dfea03087d4dbd14864b0993da

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of embedded links, forming a link farm, with a primary URL pointing to a game hack download. The document body, though partially corrupted, includes text related to game hacks and a call-to-action phrase, reinforcing the malicious intent. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-3.5-13-hack-download-game-hack
- http://pustaka.ust.ac.id/repository/free-spins-coin-master-april-2021_GM406889139.pdf
- http://pustaka.ust.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdf
- http://pustaka.ust.ac.id/repository/coin-master-free-spins-cheat_GM406889139.pdf
- http://pustaka.ust.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdf
- http://pustaka.ust.ac.id/repository/free-robux-picture_GM431946152.pdf
- http://pustaka.ust.ac.id/repository/robux-premium_GM431946152.pdf
- http://pustaka.ust.ac.id/repository/coin-master-game-2021-free-spin-link_GM406889139.pdf
- http://pustaka.ust.ac.id/repository/how-to-win-free-robux_GM431946152.pdf
- http://pustaka.ust.ac.id/repository/roblox-free-clothes-hack_GM431946152.pdf
- http://pustaka.ust.ac.id/repository/free-games-like-coin-master_GM406889139.pdf
- http://pustaka.ust.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdf
- http://pustaka.ust.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdf
- http://pustaka.ust.ac.id/repository/minecraft-free-download-windows-10_GM479516143.pdf
- http://pustaka.ust.ac.id/repository/roblox-hack-2021_GM431946152.pdf
- http://pustaka.ust.ac.id/repository/get-free-coins-on-coin-master_GM406889139.pdf
- http://pustaka.ust.ac.id/repository/free-coin-master-spins-daily_GM406889139.pdf
- http://pustaka.ust.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdf
- http://pustaka.ust.ac.id/repository/coin-master-golden-cards-hack_GM406889139.pdf
- http://pustaka.ust.ac.id/repository/robux-free-online_GM431946152.pdf
- http://pustaka.ust.ac.id/repository/how-do-you-get-free-roblox_GM431946152.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004947.bin` `1cfeca902b2b37c93d80f888eead1634e6b8e8408d0646d88b62d3c986435522`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4947	24604 bytes
`font_01_sfnt_off0000821a.bin` `580191f9d67cac0e57befe9d9f36e9aa4ec96fc89a456a262982ca34f80561e7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x821A	18776 bytes

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