PDF malware analysis — malicious · 212937f8eab3f2c9

MALICIOUS

PDF

43.0 KB Created: 2021-05-17 21:06:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 46faadc6a1cdc7923aa0da462440036f SHA-1: 89c4fcc74696a36dca760d4169f81014466e787e SHA-256: 212937f8eab3f2c99db2bf1d4b86d2c46783a150a0dbb947e0c557b464bc42d5

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 0.9971

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 https://netcdn.xyz/app/479516143/free-minecraft-skin-creator-game-hack PDF link annotation
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/play-games-for-robux_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coinmaster-fan-page_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-apk-hack-358_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/roblox-hack-game_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-free-spins-cheat_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
`stream_003_off00004ca4.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CA4	26120 bytes
SHA-256: `8bfdaa680a25fc546b11ae35c5aad12ce54b261c6d87dcfb076aef4269bf2d32`
`font_01_sfnt_off00008742.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8742	17880 bytes
SHA-256: `6ea8c897df32785154eae70acc7007925f1db6a0c6d5753d8744b2502790b6f7`

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