PDF malware analysis — malicious · dd2b83ce7a8f62bd

MALICIOUS

PDF

51.5 KB Created: 2021-06-03 11:15:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 2d65dff65e66e7a44cd8b78128c4d90f SHA-1: 34a42b5fa4aedfb97238eb24fc15beb8faa534cf SHA-256: dd2b83ce7a8f62bdd023051682fe9eea4929ac0ae82004a7e62fe259f5fefb46

110 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many of which are structured as SEO-optimized slugs pointing to game-related content, suggesting a link farm or SEO manipulation tactic. The ML classifier also flagged this PDF as malicious with high confidence. The presence of urgency lures and download buttons further supports the malicious intent, likely to drive traffic to these external sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9871

Heuristics 5

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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.online/app/431946152/roblox-free-robux-com-game-hack
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-hack-coin-master-game-without-verification_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-spin-link-coin-master_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-youthnow_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-free-blogspot_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-hack-someones-account-on-roblox_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-coin-master-game_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-apocalypse-rising-hack_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-hack-coin-master_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-by-watching-ads_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/roblox-army-free-robux_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/i-want-free-robux_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/free-robux-hack-2021_GM431946152.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/coin-master-hack-apk-iphone_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/hack-the-coin-master_GM406889139.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdf
- https://www.polresbadung.id/new/public/ckfinder/userfiles/files/are-minecraft-realms-free_GM479516143.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_004_off00005239.bin` `fe4d47ed7213c7690432875409656445aca65704738a7ae2156a18f537932c37`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5239	38140 bytes
`font_01_sfnt_off0000a73e.bin` `ea71f63ad969ac354b647f6e6da4581b14ed625e24a3109b04dcf91fda1e68c2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA73E	18348 bytes

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