PDF malware analysis — malicious · 45116504eb55aca5

MALICIOUS

PDF

32.7 KB Created: 2021-06-30 12:36:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 63a6e7ba696fa524948f41059502d660 SHA-1: 0e1ae919a656ab4aef1262643056020ce47a984d SHA-256: 45116504eb55aca5f2b94f32ceb7280eed48040ddc97d92e840098ecae2a7e10

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains numerous links to external websites, many of which are related to game hacks and cheats for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of such links, suggesting an attempt to direct users to potentially malicious download sites. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the idea that the document is designed to trick users into downloading files.

Machine Learning

Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/roblox-pastebin-hack-game-hack PDF link annotation
- https://flyingchalks.com/ckfinder/userfiles/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-robux-meme_GM431946152.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-chest-coin-master_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-robux-place_GM431946152.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/roblox-studio-beta-download-free_GM431946152.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-unused-robux-cards_GM431946152.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/roblox-hack-download-link_GM431946152.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
- https://flyingchalks.com/ckfinder/userfiles/files/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002ae0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2AE0	21844 bytes
SHA-256: `8e7dfa333530e016b102b16fc0414f60e119adc25ca5ab4d092ce0c7cd88921d`
`font_01_sfnt_off00005b00.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5B00	19032 bytes
SHA-256: `eba7209c8016e4a212bcf4d68d89f254927ab8a142fa9428b3fe15a9bc1b33de`

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