PDF malware analysis — malicious · 75dbba92d3523579

MALICIOUS

PDF

44.2 KB Created: 2021-05-18 03:33:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 86366d00214279a5d4ce69ab69b1c858 SHA-1: 21708d557e7218bd736c577845cafc57801e5ec6 SHA-256: 75dbba92d35235793a014d9b0fdbd1c59af2f89a92a598d705f836b3ab42b802

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 0.9648

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.xyz/app/406889139/descargar-hack-coin-master-game-hack PDF link annotation
- http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
- http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-generator-hack_GM406889139.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/hack-download_GM431946152.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/free-robux-images_GM431946152.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/the-coin-master-hack_GM406889139.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/freespinandcoin_GM406889139.pdfIn PDF document text
- http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
- http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/como-hackear-juego-coin-master_GM406889139.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
- http://carpetbcfyarn.com/uploaded_files/userfiles/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
- http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
- http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
- http://www.carpetbcfyarn.com/uploaded_files/userfiles/files/coin-master-hack-spins-2021_GM406889139.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_off0000495d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x495D	24220 bytes
SHA-256: `69e0e32cd8e708e6c1abecab855cf3f2090c4d63a30176b79c9b68e8affc4255`
`font_01_sfnt_off000080a7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80A7	2880 bytes
SHA-256: `10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132`
`font_02_sfnt_off00008a92.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A92	18172 bytes
SHA-256: `8e05f9f32595a35b5a9f3361bee3fb11860dee14ab597e5c6e5f24d8016f84fd`

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