PDF malware analysis — malicious · 10cb9e38aeda6e6e

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 03:07:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 143165adf1a8d05d2856b00b65e150c4 SHA-1: 3aa608fa27d76d45e98a61f309725c773c910569 SHA-256: 10cb9e38aeda6e6e2d597fdf3d5889b89c74c3c221c73efa8312cf3d009d89bc

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 0.9980

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 http://netcdn.tw/app/406889139/how-to-get-stuff-that-cost-coins-free-mcpe-master-game-hack PDF link annotation
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/minecraft-free-download_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-roblox-intros_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/wurst-minecraft_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/descargar-roblox-hackeado-robux-infinitos_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-robux-without-sever_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/hacks-for-roblox-legit-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/robux-gratis-sin-hacks-2021_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
- https://www.alldaymedicines.com/uploaded_files/userfiles/files/free-roblox-gift-card-codes-2021-generator_GM431946152.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_002_off00003455.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3455	22824 bytes
SHA-256: `0a9620b2a528064cd037cbe1ebb186f9f39ea3a8c89b74b56d7c4a48ed9fe8a3`
`font_01_sfnt_off000066fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66FE	18644 bytes
SHA-256: `27c5b0c493246218682d278be1d5b8350beffe41780a09c36db3607ad1c65035`

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