PDF malware analysis — malicious · 09db9259b3060f4e

MALICIOUS

PDF

36.8 KB Created: 2021-07-03 15:31:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 065c74d062681ce45064a1dfdf7014f9 SHA-1: f01fe876c934003f6b6f66d9d225c87d3d007d0b SHA-256: 09db9259b3060f4ebd4179180f7acbcee2f6ef736d0b33372512bd5fb874204f

142 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to entice users to click on external links. The heuristic 'PDF_SEO_LINK_FARM' indicates the document contains numerous links to other PDFs, suggesting a link farm or a method to distribute further malicious content. The primary URL http://netcdn.tw/app/431946152/getrobux-info-game-hack is a likely entry point for a phishing or malware download chain.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 5

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.
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/431946152/getrobux-info-game-hack PDF link annotation
- https://www.orbai.ai/uploaded_files/userfiles/files/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-cheat-engine-in-virtual-machine_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-100-real-no-survey_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/get-free-robux-copy-and-paste_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-hack-deutsch-auf-pc_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-its-free_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/tiktok-free-robux_GM835599320.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-prizes-roblox-2021-november_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-hack-on-roblox-ohantom-forces_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/roblox-hacks-download-2021-with-virustotal_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-hack-roblox-cheat-engine-65_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/how-to-use-cheat-engine-on-roblox-2021-pc_GM431946152.pdfIn PDF document text
- https://www.orbai.ai/uploaded_files/userfiles/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.roblox.com/.IIn 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
`font_00_sfnt_off00003a34.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3A34	22448 bytes
SHA-256: `1c61b4c6f1a793b08f560c3a116b0a277f4614a744c9f8d52858e3461996a006`
`font_01_sfnt_off00006c0d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C0D	18656 bytes
SHA-256: `dc0a3c3c5acdce1f00df61ff0cd7230377149e24fc46f8acb7cd7add040d8ac7`

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