Malicious PDF — malware analysis report

Static analysis result for SHA-256 b249dbb72cde2e07…

MALICIOUS

PDF

43.2 KB Created: 2021-05-31 12:03:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e634fae5e4e78bdca9d801d0d6d11dcc SHA-1: 79e3b639c1c925315f6c7b950a53211cb02d8e0a SHA-256: b249dbb72cde2e073cf2aca4dc5b327c4ddb2230d4b78c8c99b13d2f84e8f8bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and content related to game hacks, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the lure of free game generators suggest the document is designed to lead the user to malicious websites, likely for further exploitation or credential harvesting.

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.xyz/app/431946152/does-cheat-engine-execute-scripts-into-roblox-game-hack In PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/robux-gift-card-free-codes-2021_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-and-tix-youtube_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/roblox-hack-for-4-500-robux-inspection-code_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/hack-like-magition-roblox_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/minecraft-skins-download-free_GM479516143.pdfIn PDF document text
    • http://apcpk.com/wp-content/uploads/fsqm-files/roblox-account-hacker-tool-download_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_004_off00004c7d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C7D 24172 bytes
SHA-256: 2ddc1d24f4e6e7777be330b5d1570b3ec0e980e9c115b093caeb0f4ac5ef65da
font_01_sfnt_off00008374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8374 19176 bytes
SHA-256: d2290d61d5450eadbe316b3ff2aa3a57cd8ddafb470a3f0d972fb687337cbed9

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