PDF malware analysis — malicious · 08d2cb95a2397c60

MALICIOUS

PDF

44.0 KB Created: 2021-05-16 14:11:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 7c389264d05922a23f5e74e2aa23c918 SHA-1: 544df6c416734936a498908a3bb84b7433d06d32 SHA-256: 08d2cb95a2397c6033b91b5978962316c7e6851a6a2be705c65cd2640ab43516

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a link farm, containing numerous external links to potentially malicious websites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of linked PDFs, suggesting an attempt to manipulate search engine results or distribute malware. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though heavily obfuscated, contains references to 'Free Robux' and game hacks, likely serving as a lure to entice users to click on the embedded malicious links.

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/free-robux-with-no-survey-game-hack
- https://easypay.af/uploaded_files/userfiles/files/safe-hack-for-coin-master-android_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
- https://easypay.af/uploaded_files/userfiles/files/daily-coin-master-free-link_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdf
- https://easypay.af/uploaded_files/userfiles/files/free-robux-games_GM431946152.pdf
- https://easypay.af/uploaded_files/userfiles/files/coin-master-hack-2021-no-survey_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/picture-roblox_GM431946152.pdf
- https://easypay.af/uploaded_files/userfiles/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdf
- https://easypay.af/uploaded_files/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/install-coin-master_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/coin-master-free-spins-link-download-for-iphone_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/free-spin-coin-master-2021_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/coin-master-free-spins-today-new_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdf
- https://easypay.af/uploaded_files/userfiles/files/coin-master-card-collection-hack_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/coin-master-free-spin-today-2021_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/can-you-hack-coin-master_GM406889139.pdf
- https://easypay.af/uploaded_files/userfiles/files/free-800-robux_GM431946152.pdf
- https://easypay.af/uploaded_files/userfiles/files/how-do-i-get-free-robux-on-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_off00004d28.bin` `709d5862613fd7fdb31cabd57a892e41a025e069f5191303dda3131770c06c88`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D28	25196 bytes
`font_01_sfnt_off000087e2.bin` `c9a06fd84da7c680e9235c6c693ba85d62e2f793adf65e6d39442d95d7fb6fc9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87E2	18896 bytes

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