PDF malware analysis — malicious · 59d630fa29b2ab77

MALICIOUS

PDF

36.2 KB Created: 2021-07-05 22:45:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: b415664d11aed44b287df4ade277fa4d SHA-1: 10a8e84715d7b4f53762a18f447c302c9e1cfa31 SHA-256: 59d630fa29b2ab77e49309ecef673c9a475fd3ea14160f90d274e96ea74bebcb

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/coin-master-spin-blogspot-game-hack PDF link annotation
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-get-free-vip-in-miner-tycoon-roblox_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/all-of-the-free-stuff-in-roblox_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/youtube-cheat-central-robux-july2021_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/free-gamepasses-roblox-v3rm_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/microsoft-bing-robux_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/robux-gratis-sin-hacks_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-robux-sites-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/como-hackear-la-cuenta-de-alguien-en-roblox_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-get-free-robux-100-working-secret-method_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/coin-master-play-online-free_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/earn-robux-for-free-offers_GM431946152.pdfIn PDF document text
- http://www.biochemix.com/uploaded_files/userfiles/files/how-to-use-redstone_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_off0000359b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x359B	23636 bytes
SHA-256: `8b1e677f92ddfe8916491f9c6c8e236179e8233ad3146ca867e868adbfe4d87d`
`font_01_sfnt_off00006b03.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B03	18300 bytes
SHA-256: `a76c06889fe935666c3f20a6d1d271c63b934afc0dbd172efd1d38fc159bc63c`

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