PDF malware analysis — malicious · c2ad83d09affec9d

MALICIOUS

PDF

46.4 KB Created: 2021-05-15 13:03:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 2965ad12322397c8d3e5d2adefc5e763 SHA-1: edb41fa10344ebe6d3c8ebfaef8cfc92dacc2b97 SHA-256: c2ad83d09affec9d6f9a94f6643c0d3b993ecc45335cf915eaff84344ae57ba7

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 point to websites offering game-related cheats and hacks, such as 'minecraft-apk-1.14-4-game-hack'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users with promises of free in-game items or software. The ML classifier also strongly flagged this PDF as malicious. The presence of a 'download button' lure further supports the malicious intent of directing users to download potentially harmful files.

Machine Learning

Nyx PDF Classifier malicious score 0.9977

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/479516143/minecraft-apk-1.14-4-game-hack PDF link annotation
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/i-want-robux_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/www-roblox-robux_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/script-executor-roblox-free_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
- https://www.mentalhealthnow.co.uk/uploads/files/files/how-to-get-minecraft-dungeons-for-free_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
`stream_003_off00004e27.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4E27	34540 bytes
SHA-256: `27a6d0a1ff59c2af6c3115d9f3a48d136fa6fd577936b0e42ee6a3a3456b9385`
`font_01_sfnt_off000093fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93FC	18148 bytes
SHA-256: `7bdfed4e6bb9116c1e8b762c9aa300c7ad7e0d5b74d60207ce67a22ebb633bf5`

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