PDF malware analysis — malicious · 6b8f3a1121b9d5b1

MALICIOUS

PDF

46.4 KB Created: 2021-05-17 05:06:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25

MD5: fbda8974580e43626d5acbaa77bfbf18 SHA-1: 6f9452a507f3f65a9924e6c3c231926aa295b21c SHA-256: 6b8f3a1121b9d5b1a12ee5e2034a053fe88cd00a46914a7afbab5aa48b2b755c

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 0.8696

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/431946152/free-robux-no-verification-game-hack PDF link annotation
- https://www.lauresa.de/images/free-robux-only-username_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/bad-minecraft-free_GM479516143.pdfIn PDF document text
- https://www.lauresa.de/images/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
- https://www.lauresa.de/images/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
- https://www.lauresa.de/images/earn-rbx_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/free-roblox-adopt-me-accounts_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
- https://www.lauresa.de/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
- https://www.lauresa.de/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
- https://www.lauresa.de/images/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.lauresa.de/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/free-roblox-account-generator_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/free-pe_GM479516143.pdfIn PDF document text
- https://www.lauresa.de/images/free-robux-picture_GM431946152.pdfIn PDF document text
- https://www.lauresa.de/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.lauresa.de/images/op-rewards-free-robux_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_off000047b7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x47B7	26424 bytes
SHA-256: `a880b7860750bc6e293bf2b2b4373fa8fdf3e4029f4d717fe3de1638ff63c746`
`font_01_sfnt_off0000849c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x849C	5696 bytes
SHA-256: `450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139`
`font_02_sfnt_off000091ad.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91AD	18600 bytes
SHA-256: `361892a278de990f6dfe9fe9f512a0ec39aeba1740037781b92f32c6ad2b5051`

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