PDF malware analysis — malicious · eaf473e077a8254a

MALICIOUS

PDF

47.2 KB Created: 2021-05-11 02:55:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 7ad981c117794f9edd5e1098468a7510 SHA-1: 80e90bb28f12beac9d588f393a1626c32f4ef4c4 SHA-256: eaf473e077a8254a7a84f246bc0d68e497ca8ad99ebb78f25f0ee78df0084a9d

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/coin-master-hack-spins-game-hack PDF link annotation
- https://www.donjastubica.hr/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/make-free-robux_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
- http://www.donjastubica.hr/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/robux-hack-generator_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/dominus-roblox-free_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/games-for-robux_GM431946152.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-robux-working_GM431946152.pdfIn PDF document text
- http://www.donjastubica.hr/files/free-coinmaster-spins_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://www.donjastubica.hr/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://www.donjastubica.hr/files/free-robux-only-1-step_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_off00004a7a.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A7A	24964 bytes
SHA-256: `22ef964f9f61691dcaa703724fd0a0858a0e64a1b4cdd3898350273c0b6ec957`
`font_01_sfnt_off000082bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82BB	8676 bytes
SHA-256: `e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468`
`font_02_sfnt_off00009745.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9745	17892 bytes
SHA-256: `340cad640208a3f63c565dece8f0e8a86db030e36dd2ab9bf46956c7901539b7`

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