Malicious PDF — malware analysis report

Static analysis result for SHA-256 0679818c5b8b73e7…

MALICIOUS

PDF

44.8 KB Created: 2021-05-11 05:53:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4797fa7373bccaaded96e13288a141df SHA-1: a9766da3763fb5546b7c430f3090da19f2d2e859 SHA-256: 0679818c5b8b73e7c3849421702e7f915603b8b3167d02fbbaa75e7f6c4dcd9d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as "game hack" or "free generator" content. The primary link directs to a URL associated with free Robux generators, a common lure for phishing or malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-much-robux-can-you-get-with-1-million-dollars-game-hack In PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/original-roblox_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-robux-group_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://bemviverclin.com.br/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://bemviverclin.com.br/images/free-online-minecraft-server_GM479516143.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.

FilenameKindSourceSize
stream_003_off00004b63.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B63 26948 bytes
SHA-256: d602af968837ed70f2666d69edbd1621a9640b714240d580823f42944cb9c37c
font_01_sfnt_off0000890e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890E 19536 bytes
SHA-256: 876d9410c613bd28eae874a8e258613decc08a63963b9dc9af550a443a712a6c

Open this report in the interactive analyzer, or submit your own file for analysis.