PDF malware analysis — malicious · 09fa40d4c0856bc8

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 14:40:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 94d70031c79386753a2f2417e6265b6a SHA-1: 96963612b158b0e874c80f7263caf78d9a354de8 SHA-256: 09fa40d4c0856bc888344735f964689c06698e3015c2bdc525b2dea3a9faecf9

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that advertise game hacks and generators, a common lure for malware distribution. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious download or exploit site, likely initiated via a spearphishing attachment.

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/479516143/minecraft-windows-10-edition-hacked-client-game-hack PDF link annotation
- https://www.astrospace.com.tw/upload/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-116-free-download_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-co_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-hack-online-cheat_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-apk_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-daily-spins-and-coins-for-coin-master_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
`font_00_sfnt_off00004b47.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B47	24492 bytes
SHA-256: `d5d77581705da3d714f58a3182e7bea337fed6f9d267862569264f03b158a893`
`font_01_sfnt_off0000822f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x822F	18768 bytes
SHA-256: `cd5cb1933d9fb22e17e8e809ea8161fcf394f5743921e04aafaba27e29739dbd`

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