PDF malware analysis — malicious · 821d4c9728f0c8cf

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 16:51:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 7236897c9029f0e790f79c589545240d SHA-1: 7fe2ccaa8565c10dae5b7d685221ab933341a3f8 SHA-256: 821d4c9728f0c8cfe2e30f7c9ef68511a5670336a7039a3b9ad81718777b2c31

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links to external resources, including a direct link to 'ejecutador-de-hacks-roblox-game-hack'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a tactic to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. The presence of embedded URLs and the document's content point towards a phishing or malware distribution attempt, likely involving the download of executables.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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/ejecutador-de-hacks-roblox-game-hack
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-robux-not-a-scam_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/how-to-get-free-robux-on-chromebook_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/how-to-get-a-free-minecraft-account_GM479516143.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/roblox-build-a-boat-hack-script_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/links-to-get-free-coins-in-coin-master_GM406889139.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/app-store-roblox-game-free_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/how-do-u-get-free-robux_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/how-do-you-get-free-robux_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/minecraft-hacker-skin_GM479516143.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-hack-injection_GM406889139.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-group-roblox_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/how-to-earn-robux-on-roblox_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/cool-minecraft-hacks_GM479516143.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/roblox-hack-scripts-pastebin_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-hack-lost-world-2021-com_GM406889139.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-rewards-free-spins_GM406889139.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdf
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/sop-free-private-server-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
`font_00_sfnt_off0000314f.bin` `36a5474aa5ebb257b36bfc227a8cc81d4bc584817f516ca36dc13aa1ff509d5d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x314F	21724 bytes
`font_01_sfnt_off0000610e.bin` `51bc07b5617e87eb67993d3baf9d3026de06ab7f95a1fa5fc33911199c893b00`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x610E	19428 bytes

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