PDF malware analysis — malicious · 61b05978267b76ec

MALICIOUS

PDF

35.6 KB Created: 2021-07-03 23:16:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02

MD5: 39cbc4b0e74a28b2a9013bf4eefe4e05 SHA-1: 1c247198c49a35652b9952fc906d80f605bcbe1a SHA-256: 61b05978267b76ec58a8935941e161d51e2f2e3a942c4d281e581a2c6ca442b6

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/how-to-get-free-spins-on-coin-master-iphone-game-hack PDF link annotation
- http://stomatoloska-ordinacija-rijeka.com/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/infinite-robux_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/how-mto-get-free-robux-easy_GM431946152.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/roblox-infinite-jump-hack-download_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/roblox-hack-clothes_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.stomatoloska-ordinacija-rijeka.com/files/grow-robux-hack_GM431946152.pdfIn PDF document text
- http://stomatoloska-ordinacija-rijeka.com/files/free-bc-roblox-android_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_off00003309.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3309	23756 bytes
SHA-256: `343fdca540e7c5b36f1b41f22c770320c0ca113365d364ab804ad46e1a72bc3c`
`font_01_sfnt_off0000680e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x680E	18504 bytes
SHA-256: `fb94ba828be114796ce33ae88e534852be4d565d50d53dd599267a6729c84c7e`

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