PDF malware analysis — malicious · afb395fde02ef03c

MALICIOUS

PDF

32.9 KB Created: 2021-07-04 23:56:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 65f836f2c33881170fe9b6bbf5a6657b SHA-1: 22864d951c7a2d5b213fd96abe503a9570700e4b SHA-256: afb395fde02ef03c1420785c99a8ed886cef141fc1d5530bf301aab408f23c4a

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/get-free-coins-on-coin-master-game-hack PDF link annotation
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-cheat-engine-2021_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coinmaster-twitter_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/cheats-for-roblox-murder-mystery-2_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-adopt-me-hack-script-pastebin_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-net-hack_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-mod-apk-hack_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/people-offering-free-robux_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-cube-defence-cheat_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/coin-master-spins_GM406889139.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/hack-robux_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/roblox-sexually-abused_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://vinhoshortencia.com.br/media/ckfinder/userfiles/files/free-robux-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
`font_00_sfnt_off00002e33.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2E33	21944 bytes
SHA-256: `e1d27fc91ed3131afc01db2824205147f4ae65d182ddc33bde1e8c8ea4c0830b`
`font_01_sfnt_off00005e7e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E7E	17996 bytes
SHA-256: `84abfb78fff46ba9d1cedccb39989fd511fb56f98da01a72a76aef3ac1dd5f54`

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