PDF malware analysis — malicious · 0f83271d54181af4

MALICIOUS

PDF

40.5 KB Created: 2021-05-19 14:55:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 8b9d0f6809319539a6f67970daa3308b SHA-1: aa3ab5f9fd23d9b137df3978bb7a88599dcad0bd SHA-256: 0f83271d54181af4895aca8f03d91021926ca8267de1d59a34eafa140c36d4e0

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 0.9971

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/835599320/tiktok-free-folowers-jio-game-hack PDF link annotation
- https://www.astrospace.com.tw/upload/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/robloxhacks_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-roblox-avatar_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-codes_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_003_off00004613.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4613	24732 bytes
SHA-256: `80fc0ce20c07a5ba1c66d439a76bea268a8e722b36e234b507bd42c4cd529457`
`font_01_sfnt_off00007d32.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D32	17860 bytes
SHA-256: `19039675404dc0d532a60ea55fbcc77298966a49fd0c6f575a2bc16d8f42d676`

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