Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bb8dc6e2fd6d0ee…

MALICIOUS

PDF

42.7 KB Created: 2021-05-13 17:36:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 610d069aeadb843ac6a24496da56b5b8 SHA-1: 66a80bd7e0b5839a3d29150055355d570af63842 SHA-256: 0bb8dc6e2fd6d0ee3b47004a69309b63b1083caeb7b3086e45023b1e7eb913c1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors and game hack lures, indicating a phishing or scam attempt. The presence of embedded URLs and a 'download button' heuristic further supports this. Although no scripts were explicitly extracted, the nature of the links suggests a potential drive-by download or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/robux-free-c-game-hack In PDF document text
    • http://grupodin.com.br/images/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://grupodin.com.br/images/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • http://grupodin.com.br/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-hack-apk-35-18_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • http://grupodin.com.br/images/how-to-get-free-robux-without-human-verification_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.

FilenameKindSourceSize
stream_003_off00004965.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4965 25684 bytes
SHA-256: 5826d30b37198cec56d47fb8d62b82f8da7e39afe9c7e68a6c6c912a37504705
font_01_sfnt_off0000853f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x853F 18012 bytes
SHA-256: 3f1ded8a9c51e4f0f41c660fd84d3573ebe8f92a83837bcaa523a9614d650e73

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