PDF malware analysis — malicious · 8726b60b22e46b96

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 04:22:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: 4bba9d73086a3de0f21b7a5adb839555 SHA-1: 09cc44c2d70b266b54a266fb422f76e6b9dfec36 SHA-256: 8726b60b22e46b96def35edd4b4f83e8671b6f235cc0a7aedffc45429a318649

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 0.9865

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.online/app/431946152/free-robux-no-generator-game-hack PDF link annotation
- https://emindonesia.com/assets/CKImages/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-roblox-hack_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-vip-roblox_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/coin-master-club-hack_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-tiktok-like_GM835599320.pdfIn PDF document text
- https://emindonesia.com/assets/CKImages/files/free-robux-no-verification-2021_GM431946152.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
`stream_004_off00005091.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5091	24712 bytes
SHA-256: `4afdbc6ddde6be4f14d508f5a2425e951d1b012517ae5556fdc42c7ce0fb0e9c`
`font_01_sfnt_off0000899b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x899B	18344 bytes
SHA-256: `d0a2580a9848789708f711aeedd4c44eef26827bf748da476089155bc80243e8`

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