PDF malware analysis — malicious · 90e7ee716ad4c216

MALICIOUS

PDF

41.2 KB Created: 2021-05-14 06:39:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 4aca303077c788d77471602d6de6f126 SHA-1: 5b64d73d38fb5d021529afbae04d31c6895b4419 SHA-256: 90e7ee716ad4c21699b0dcc81dbf7bb093eebefd153900e5580c4eaee06b3bf1

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, many of which are presented as "hacks" or "free downloads" for popular games. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to drive traffic to potentially malicious sites or host malicious files. The document body, though partially corrupted, contains references to "Coin Master Hack" and game download URLs, reinforcing the lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/2021-coin-master-hack-game-hack
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/minecraft-java-edition-download-free_GM479516143.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/how-to-hack-mcpe-master-coins_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-hacks-that-actually-work_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/2021-free-spins-coin-master_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/games-that-give-you-free-robux_GM431946152.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/minecraft-pe-free-download-android_GM479516143.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/flip-master-coins-hack_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-free-blogspot_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/will-minecraft-ever-be-free_GM479516143.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-fb-free-spins-link_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/robux-premium_GM431946152.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-game-download-free_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/roblox-hacked-version_GM431946152.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/free-robux-android_GM431946152.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/free-coin-master-coins_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/free-coins-coin-master-iphone_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/how-to-get-free-robux-without-offers_GM431946152.pdf
- https://www.delhihomeoboard.in/uploaded_files/userfiles/files/coin-master-free-coins-spins_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000047dc.bin` `f4969d47dfe0a2e097877394eea07e2643c0f900c296737a200566d317d7a33d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47DC	24096 bytes
`font_01_sfnt_off00007f1d.bin` `920b3105a00d2e81b44cb3def78d47879883f677e8f7cd602ed441085c36723f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F1D	18116 bytes

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