PDF malware analysis — malicious · fc2bcd044a8db5bb

MALICIOUS

PDF

41.7 KB Created: 2021-05-12 06:05:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22

MD5: 886268957607ab40dd4ef3e3cf094ba7 SHA-1: e77364070c885d203dadffbde93edf91bbe6455a SHA-256: fc2bcd044a8db5bbf7cb6b57460ee05894852d4d9100f0c022a27728edfd3617

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 0.9971

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-spin-generator-game-hack PDF link annotation
- https://www.contabilidadesomma.com.br/images/free-coin-master-app_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/rbx-website_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-robux-reddit_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/best-tricks-co-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/robuxglobalcom_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/robux-hack-free-robux_GM431946152.pdfIn PDF document text
- https://www.contabilidadesomma.com.br/images/hacker-coin-master_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
`stream_003_off000048da.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48DA	24688 bytes
SHA-256: `293843b131455a58dc56c44ae549be9d2290ed11f5a13cc10d0e9fa6ceb7c77e`
`font_01_sfnt_off000081a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81A3	17892 bytes
SHA-256: `fb469e3bf9035f41b30956febb327ba05298378f8328666f03cb40abfa022080`

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