PDF malware analysis — malicious · 76a8f4786845d410

MALICIOUS

PDF

46.4 KB Created: 2021-05-17 01:40:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 3b465b5d54cacc28deda4d1b3ac49199 SHA-1: f1996aea8418eeefebf02c1b53b96392594e94d8 SHA-256: 76a8f4786845d410f5037680f085b0abbff45c58d45e83f293e81f910f135cf1

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious infrastructure, disguised as a download for a game hack. The document body, though heavily obfuscated, contains references to game-related exploits and URLs pointing to similar content. The presence of a visual download button heuristic further supports the lure-based attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.8948

Heuristics 3

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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
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-1.8-9-hacked-client-game-hack In PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-update-2021_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-2021-robux_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-villages_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-comroblox_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/como-descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
- https://www.nationalmilklaboratories.co.uk/uploads/files/files/roblox-free-no-download_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00004db0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4DB0	25112 bytes
SHA-256: `4302f9b76d8162f1dfb5e70f72871c4c0c2c7f5fe3e6b54ac67be77beb0cd831`
`font_01_sfnt_off000087a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87A1	3092 bytes
SHA-256: `3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0`
`font_02_sfnt_off0000924c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x924C	18532 bytes
SHA-256: `397fe146c4cb21b8fa0568cb6b824f44c66529b57f9939d7b0b2fcb40fe95c7f`

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