PDF malware analysis — malicious · 98e422778ad30028

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 23:58:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 673b41aa3a2b9cf5e094995c0fa8a4d5 SHA-1: efd0c4baf2355a32a926180f0ac2f379cb83e8c6 SHA-256: 98e422778ad3002834e16d4424824ae42597ddfc5785b09f0221b2b2e98adc5e

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many with game-related keywords, suggesting a link farm designed to lure users to potentially malicious sites. The presence of a 'download button' heuristic further supports the idea that the document is intended to trick users into clicking links that could lead to malware downloads or other harmful content. The ML classifier strongly indicates malicious intent.

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/hack-roblox-2021-game-hack PDF link annotation
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-strategy_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/get-free-tiktok-likes_GM835599320.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-redeem-exclusive-virtual-item-roblox_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-spin_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/master-coin-hack_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/robux-for-offers_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/hack-roblox-robux-and-tix_GM431946152.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
- https://www.cgalgeria-dubai.com/userfiles/files/how-to-get-minecraft-for-free-on-pc_GM479516143.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_off00002fca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2FCA	22984 bytes
SHA-256: `fc8d0d84a92a932582421bb8118a3fd054c4419f33993a43012250d0e25ca610`
`font_01_sfnt_off000062bd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62BD	19056 bytes
SHA-256: `7af285f97e3dec95b647fc809784b86b997e27abb9e933d99ece8fc5688b9abe`

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