PDF malware analysis — malicious · 9ff516f1967d11e6

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 07:51:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 9a30848e02eab5016bc0091bc9f3f96b SHA-1: dd0d3297e88b010141c8c66aa9109e7efbe90504 SHA-256: 9ff516f1967d11e655ad0473ccc9f7481a79400ffa49ab44a5d3596d0feeecdd

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9865

Heuristics 4

PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
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/weird-roblox-game-hack PDF link annotation
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/easy-robux-generator_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/minecraft-client-download_GM479516143.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-spins-on-coin-master-cheat_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/roblox-source_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-no-apps_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/hack-roblox-players_GM431946152.pdfIn PDF document text
- http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/minecraft-java-edition-key-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_004_off000050f9.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x50F9	25448 bytes
SHA-256: `056570a51406e19ca12776dacb1c1fd1d46102677f5ded8068e9a131a8d0e924`
`font_01_sfnt_off00008c2d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C2D	18276 bytes
SHA-256: `1b4cc20e0ac8438115b264510fe10e2d41ecb60e73830c90cadb3a3c1b276198`

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