PDF malware analysis — malicious · f7935ddd13c190d5

MALICIOUS

PDF

34.0 KB Created: 2021-06-26 20:01:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 54aff64e28d8b2fbc34d4b7c229d2527 SHA-1: 6cc9d5bcf7454468349c69cf23c9d51cc72a7909 SHA-256: f7935ddd13c190d575cb3625958289eed62300a260704e50e3d3556188cc0dab

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded links, many of which are disguised as related to game cheats and free currency for popular games like Roblox and Coin Master. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves luring users to external sites that likely host malware or phishing content.

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/roblox-hide-and-seek-cheat-game-hack PDF link annotation
- https://www.alarqam.ae/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-roblox-acc-2021_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/how-to-have-free-shirts-bc-roblox_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/robux-com-roblox_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/doctor-louie-roblox_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/rewardrobux-com_GM431946152.pdfIn PDF document text
- https://www.alarqam.ae/userfiles/files/free-50-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_off00002e82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E82	22144 bytes
SHA-256: `8de34c4c9ee9fdf1a26086bab33150ff2e043ae85e6cac13d3466383af3433e3`
`font_01_sfnt_off00005f73.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F73	19220 bytes
SHA-256: `2125866f1178e8e9312eeae11a470c2aa54de8c6a198b9e146593b8824ad1dc4`

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