PDF malware analysis — malicious · 08570cb793b70af0

MALICIOUS

PDF

48.4 KB Created: 2021-05-16 10:03:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 538c682768d3cbb7cce003ebb07b365e SHA-1: 2220cb4300ba076ec51cc19a7066864651e84fe8 SHA-256: 08570cb793b70af024c9bfa5d7b1c763156fca6247eaae3a8a40c6b22f61f5a3

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 0.9013

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/how-to-get-coin-master-free-spin-link-game-hack PDF link annotation
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/robux-earner_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
- https://www.thekukkad.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-2021_GM431946152.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_off00004ed1.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4ED1	24636 bytes
SHA-256: `dd0d23ff81a5e1f2e90d162ea02961dc7f609e05635d0a4b8ed21b3e8892d0c6`
`font_01_sfnt_off0000869e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x869E	8676 bytes
SHA-256: `e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468`
`font_02_sfnt_off00009b28.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9B28	18220 bytes
SHA-256: `b2f7f6595bf64a30853f7d52e44db90316d94cc0a70445ac6854799e3a79afd4`

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