PDF malware analysis — malicious · be3407ea7d097668

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 16:31:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: a6a19222d8badb34a74453878b0b278b SHA-1: 2593864e39d936569de4c6ad0ec914ee7dc57965 SHA-256: be3407ea7d097668535186295e89f71b3c849f12ab8ccf1d792de1c96b2e4964

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/free-coins-on-coin-master-generator-game-hack PDF link annotation
- https://www.skygan.com/uploaded_files/userfiles/files/earn-free-robux-legit_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/best-free-skin-in-roblox_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-change-name-hack-pastebin_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/roblox-someone-thinks-im-hacking_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/squid-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-to-hack-roblox-prison-life-v2-02_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/how-to-get-free-robux-xbox-one-2021_GM431946152.pdfIn PDF document text
- https://www.skygan.com/uploaded_files/userfiles/files/tiktok-free-food-vending-machine_GM835599320.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_off000030e6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x30E6	22524 bytes
SHA-256: `328febefcafaf5aa3f5678372e4a88247567828ea4b71bd5969a89985c2a8313`
`font_01_sfnt_off00006323.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6323	17996 bytes
SHA-256: `652bfc4429efe625da62e4032e3ff2009d9c60449c75ce9dfd4d98481dbe128e`

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