PDF malware analysis — malicious · 36830f2884ee7ac2

MALICIOUS

PDF

34.5 KB Created: 2021-06-20 10:20:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: dbfa597688cd46a99b8a0e0be025df6a SHA-1: cd3585b37ed8050995db4270260a65faac13b20c SHA-256: 36830f2884ee7ac2fd8f89abf123a7da43d7a854c8305ae2f568c3ad3a922c8d

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a document body that promotes game hacks and free in-game currency, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests an effort to distribute malicious content or redirect users to harmful sites. No scripts were extracted, but the overall structure and content point to a malicious lure.

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/has-roblox-been-hacked-2021-game-hack PDF link annotation
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/114-hacks_GM479516143.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/is-roblox-downloadable-on-ps4-for-free_GM431946152.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/roblox40com-robux_GM431946152.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/what-is-coin-master-app_GM406889139.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/how-to-get-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/coin-master-fan-club_GM406889139.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/play-coin-master-online-free_GM406889139.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/roblox-hack-app_GM431946152.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
- http://www.ksmt.edu.np/assets/ckfinder/userfiles/files/rbxfree-com-free-robux_GM431946152.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_off00002f27.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F27	22324 bytes
SHA-256: `1f7de50c536c3c2ae1f6c8aaf5cc26f2d65a571693bd05764dc689a85476f0d5`
`font_01_sfnt_off000060ea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60EA	19232 bytes
SHA-256: `e141ab1fe313fc8cc5a53d1116895352a1de4f7aab9b84cf167b30b0321de91a`

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