PDF malware analysis — malicious · 116758005f753659

MALICIOUS

PDF

34.0 KB Created: 2021-07-08 18:45:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: 692dce560d3a1591fc5008b8552b73f8 SHA-1: 3988db3a1da4cb47f54b93e899849cdfd75221a5 SHA-256: 116758005f7536595734b066f6df99be33745f7fb958c12446801fd2a18a518d

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/como-hackear-coin-master-gratis-game-hack PDF link annotation
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/nice-roblox-games-to-hack_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/roblox-detects-cheat-engine_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/stop-teleport-hacking-roblox_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/robux-generator-free-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/minecraft-mod-menu_GM479516143.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
- http://www.duchem.ae/uploaded_files/userfiles/files/roblox-meepcity-games-for-free_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_off00003033.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3033	22548 bytes
SHA-256: `95c18d758a00057bf7bd0fe348dd3dc6118ce55303c6c33bc323dd0bbe94619e`
`font_01_sfnt_off0000626b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x626B	18264 bytes
SHA-256: `c66f3070175391364df959cc21fdee99d33dee402919222e4eb7164928e73973`

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