PDF malware analysis — malicious · 0cafc8d83b73b418

MALICIOUS

PDF

46.3 KB Created: 2021-05-10 17:33:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: e2a3ac73936c7c427008274457753f0b SHA-1: f7ee23595dfef37a9fdd4f0b12c721603d96691c SHA-256: 0cafc8d83b73b41871113b51e126b49472fbbd91b0fc9bf483005f9b72cc3075

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "Roblox hacks" and "free Robux". The ML classifier also flagged this PDF as malicious. The presence of these links and the lure of free in-game currency strongly suggest a phishing or scam attempt designed to trick users into downloading potentially harmful files or visiting malicious websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9977

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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/roblox36.com-free-robux-game-hack In PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/roblox-rules_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-robux-app-2021_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-app-hack_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-free-online_GM406889139.pdfIn PDF document text
- https://www.e-learning-mts-sirojulhuda.com/__statics/gudangsoal/files/coin-master-tricks_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
`stream_003_off00004c79.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C79	29984 bytes
SHA-256: `10e6cec373541a7989e4591b030fd15af8daad4c8f7780bdf26a04faecb87088`
`font_01_sfnt_off000091ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91AD	18756 bytes
SHA-256: `75a7293df35b739ae2294dba45007dab7b7658b4df7c6a7e046c10781a1fd260`

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