PDF malware analysis — malicious · c7a3529e8aa2a6dc

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 11:04:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 08386d3d73592167d67c37a24ee032af SHA-1: aae5a49f6109055e1590fbc0a52675eccc9c203e SHA-256: c7a3529e8aa2a6dc8e59bbbfa2e49e170deea692ee8748623ef7ab80400effd1

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/how-do-you-get-robux-game-hack PDF link annotation
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/how-to-noclip-in-roblox-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-respawn-rout-66-roblox_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/roblox-parkour-bag-hack_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-robux-youtubecom_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/speed-hack-roblox-script_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/i-just-got-tons-of-free-robux-instantly-copy-pasta_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/hack-para-jailbreak-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/babe-free-robux_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/easy-free-robux-com_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/roblox-bucks-hack-deutsch-erfahrungen_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-robux-please_GM431946152.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
- http://www.highlandernepal.com/assets/ckfinder/userfiles/files/a-lot-of-robux_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_off00003070.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3070	22012 bytes
SHA-256: `b9a6d471afa7960cb2c4c2388411eea6873808a54ba592cf0061799f29593b61`
`font_01_sfnt_off00006031.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6031	19148 bytes
SHA-256: `6aa1a359455049c4d302ae89b0ea3ccbecfe01f67b57fe80c0c8e563803ba4d8`

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