Malicious PDF — malware analysis report

Static analysis result for SHA-256 86dc40cfa805c9d7…

MALICIOUS

PDF

44.4 KB Created: 2021-06-08 23:09:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6a75005ff73fb8896048524ad2e1c848 SHA-1: e089c4a3093eef041025c0980a43220346ae1ef8 SHA-256: 86dc40cfa805c9d7975c5f8716f16579d6bf5bf7f76e0b54340e44ecc97a7cdf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a social engineering attack. The primary link directs users to a site offering 'hack para roblox', suggesting a lure for free in-game currency or cheats. The presence of embedded URLs and a malicious redirector link strongly suggests the document's purpose is to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/hack-para-roblox-reign-teleports-666-y-mas-tutorial-game-hack In PDF document text
    • http://ivanitskyvs.ru/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/master-coin-hack_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/roblox-bloxburg-free-to-play_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-minecraft-skins-java_GM479516143.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://ivanitskyvs.ru/images/free-robux-generator-no-survey-no-download-no-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
font_00_sfnt_off00004fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC1 24520 bytes
SHA-256: f78163e53faedb6bca659f3bba77969f745f88b2e373ee204a24d48fa7836413
font_01_sfnt_off000086b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B0 19688 bytes
SHA-256: 9cc35c4a7f40fad9e9de6af6e232c630a79c98ae5375c82b6e74dcd094df0123

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