PDF malware analysis — malicious · bf1761d3c648249c

MALICIOUS

PDF

34.5 KB Created: 2021-07-07 06:11:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 344f2e5eee06603435f244539a8fe49f SHA-1: 219c05e4daf4a21813d8c32353a83ad295369792 SHA-256: bf1761d3c648249ced1fac8c8c2e112d9f61fcd24aef5b1b851b2f391913fc6e

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/431946152/roblox-booga-booga-hack-game-hack PDF link annotation
- https://www.itc-nekretnine.hr/files/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/cheat-engine-roblox-kicked-bt-server_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/how-to-recover-your-hacked-roblox-account_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/free-roblox-money_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/pubg-uc-quiz_GM1330123889.pdfIn PDF document text
- http://itc-nekretnine.hr/files/coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
- http://itc-nekretnine.hr/files/e400-free-roblox_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/how-to-hack-in-robux-easy_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/get-free-robux-gg_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/how-to-bypass-the-roblox-cheat-engine-bypass_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/game-for-have-a-robux-free_GM431946152.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
- https://www.itc-nekretnine.hr/files/roblox-login-hack_GM431946152.pdfIn PDF document text
- http://itc-nekretnine.hr/files/how-to-hack-and-get-a-free-item-in-roblox_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_off00002f75.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2F75	22900 bytes
SHA-256: `8fed64b97091cffeeee8c646628b5cbcc4d0ef55d438604c1932052567f79010`
`font_01_sfnt_off000062b2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62B2	18656 bytes
SHA-256: `5517e2d86f7fdb196d5c27d37c24d1d377f5296dc5a2e6953a64d5d77455ff0d`

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