PDF malware analysis — malicious · 3f3ca580205ff7a5

MALICIOUS

PDF

46.9 KB Created: 2021-05-13 14:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: baa6b879cb31502e32af1b7e2d68b5c6 SHA-1: 04fb96c5b6d8f4c80413729330e332cfc0afc384 SHA-256: 3f3ca580205ff7a5ecb951736533a77c99f19b73dd4e867a4fed6f7b7504da1e

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 0.8948

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/406889139/spin-coin-master-hack-game-hack PDF link annotation
- https://itamleek.net/uploaded_files/userfiles/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-robux-exe_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/worst-client_GM479516143.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/roblox-devil_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/wurst-18-9_GM479516143.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
- https://itamleek.net/uploaded_files/userfiles/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off000049f6.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x49F6	29756 bytes
SHA-256: `9b46439fb66c24b4554458b0732e7f1a6c88d2affe4163a64ca67acf3e66c57e`
`font_01_sfnt_off00008c8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C8E	2824 bytes
SHA-256: `381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5`
`font_02_sfnt_off00009631.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9631	17892 bytes
SHA-256: `a3a1b04a82279d9b81c305d9015fdfbc4eb608af79be49bd49bec6a16d15ba5c`

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