Malicious PDF — malware analysis report

Static analysis result for SHA-256 864b2e243b5dd160…

MALICIOUS

PDF

35.0 KB Created: 2021-06-19 20:44:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dc66486b2d5889fdafd712bb16862ea4 SHA-1: 2c8607b9613d02d54351c1ba0fb7f3d6e6b56f93 SHA-256: 864b2e243b5dd1604c5500893718c9d0aa5f2c14a672c5e4a6d815d79e634e5f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, disguised as game hacks and generators. The heuristic firings indicate that these links are part of a known malicious redirector chain. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to potentially harmful websites.

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 http://netcdn.co/app/431946152/free-3d-modeling-software-for-roblox-game-hack In PDF document text
    • http://pesok-rk.ru/images/free-robux-generator-2021-robux-hack-no-survey-updated-get_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-robux-not-a-scam-2021_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-robux-glitches-2021_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/awards-free-robux_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-card-hack-apk_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-free-master_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/roblox-account-hack-2021-works-next-video-with-proof_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/is-the-robux-hack-safe_GM431946152.pdfIn PDF document text
    • http://pesok-rk.ru/images/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pesok-rk.ru/images/roblox-texting-simulator-hack-script_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3123 22076 bytes
SHA-256: 125b370da4f8e82d5cdea09e0eea76da1230bbe6b5a40a3309c87739e6d14c4c
font_01_sfnt_off00006209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6209 19584 bytes
SHA-256: 588d649401c34d6d6f0ec21ed4a97944282c68793b5dfdbe6eafe1da91e0d152