PDF malware analysis — malicious · 78d73867ea145ede

MALICIOUS

PDF

35.0 KB Created: 2021-07-04 14:52:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 58b841c6553350c7d817ca3bf8ccf330 SHA-1: d450481273dcc75bd2962cc8aa139894d352f0f3 SHA-256: 78d73867ea145ede403271161b81311e4302bf7b80957df8c13eef69a2be1c3c

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-jailbreak-hack-download-game-hack PDF link annotation
- https://www.apartmani-mestrovic-krk.hr/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/free-coin-master-game_GM406889139.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/free-gta5-download-free-robux-veebucks_GM431946152.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/how-to-change-money-in-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- https://www.apartmani-mestrovic-krk.hr/files/hack-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.apartmani-mestrovic-krk.hr/files/roblox-plus-download-free_GM431946152.pdfIn PDF document text
- https://www.apartmani-mestrovic-krk.hr/files/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
- https://www.apartmani-mestrovic-krk.hr/files/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
- https://www.apartmani-mestrovic-krk.hr/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
- https://www.apartmani-mestrovic-krk.hr/files/easy-robux_GM431946152.pdfIn PDF document text
- http://apartmani-mestrovic-krk.hr/files/coin-master-free-coins-link-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
`font_00_sfnt_off00003181.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3181	22192 bytes
SHA-256: `37b6ca6f9947276794636d571f7c2354c7a054bd065976293a94f16de61aa4ee`
`font_01_sfnt_off000062ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62BA	19448 bytes
SHA-256: `c6b402b96529d0790e5d7e1f1484851c98e2ea285be43ed7d04bfb6fa8727121`

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