PDF malware analysis — malicious · 16eccba199f4a00a

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 02:27:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: ea573561b98f44e0ac0bf799f9e1d3fb SHA-1: d354fcc868158afbe150641ea5a0ae2bf2d80249 SHA-256: 16eccba199f4a00a18d89902c86a42613c5095dedce47a137a1481fac7b82c16

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-spins-and-coins-coin-master-facebook-game-hack PDF link annotation
- https://www.astrospace.com.tw/upload/files/did-roblox-get-hacked-in-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-java-free-account_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-paintball-level-hack-cheat-engine_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/claim-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-fmswat-camp-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-to-get-a-free-pet-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/sonydeveloper-hacking-on-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/blue-boy-hack-roblox_GM431946152.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
- https://www.astrospace.com.tw/upload/files/coin-master-free-spin-trick_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
`font_00_sfnt_off00003046.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3046	22468 bytes
SHA-256: `6a5f0b58f228ecd2f15ea4d74fc029441b4293a9b5fd4ea4c616de5b6e55c7bf`
`font_01_sfnt_off00006285.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6285	18676 bytes
SHA-256: `8db5717cf6e640ed376c5b43aafbaa83ba904c097dd38722e4f2d0de15199707`

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