PDF malware analysis — malicious · 19c681c8d9151de8

MALICIOUS

PDF

36.1 KB Created: 2021-06-26 05:54:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17

MD5: 761c7dac679fac52b1c92f6d4138e0ee SHA-1: 483d5c19f53705a863bcf416c739ee9bc2844d97 SHA-256: 19c681c8d9151de89bf29a7ad53ebe08bfc35289dbdb57dee9f85d3a103daabc

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document uses a lure related to game hacks and free in-game currency (Robux) to entice users. It contains multiple embedded URLs, with a primary one pointing to a suspicious domain that likely serves as a redirector to malicious content or a phishing page. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure and URL patterns.

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.co/app/431946152/apps-that-will-give-you-free-robux-game-hack PDF link annotation
- http://www.samsoncc.com/uploaded_files/userfiles/files/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/roblox-hack-site_GM431946152.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/how-to-get-free-doge-mask-in-roblox_GM431946152.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/coin-master-card-hack-app_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/earn-robux-sites_GM431946152.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/free-unlimited-roblox-hack_GM431946152.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/coin-master-level-3_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
- http://www.samsoncc.com/uploaded_files/userfiles/files/minecraft-launcher-download-free_GM479516143.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_off0000327d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x327D	22864 bytes
SHA-256: `187b1295289adb4d953a7244be2cfc0adc44a9574ef13260b1719a2bc010d700`
`font_01_sfnt_off000065e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65E7	19832 bytes
SHA-256: `f401f1d5b123604afb93765e38a7752b611e6f29ce75498de577b9ed02526862`

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