PDF malware analysis — malicious · f7d05a1ac185f94c

MALICIOUS

PDF

42.2 KB Created: 2021-05-18 04:00:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 5e6137fec7e186b116daacd7db4cfb56 SHA-1: a97d85d67efc5713ea456258a11878cb25cc1d11 SHA-256: f7d05a1ac185f94cde10b73bf6a4ac44bee5f8f3f3a79edee59cc74c662d3d73

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/406889139/free-spin-coin-master-link-download-game-hack PDF link annotation
- https://www.astrospace.com.tw/upload/files/coin-master-club-hack_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-no-download_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-roblox-wings_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-rewards-app_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-update-2021_GM406889139.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_off00004954.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4954	24468 bytes
SHA-256: `899bcf59f80d0f31761842d524e0919197afc97e1768bf7c579042d42e8dbc2c`
`font_01_sfnt_off000081b5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81B5	18636 bytes
SHA-256: `136b79965a5248ac6e7935dc786215b4277752963c3c0798ae07969220183c9d`

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