Malicious PDF — malware analysis report

Static analysis result for SHA-256 4735dce0a7304b6a…

MALICIOUS

PDF

32.4 KB Created: 2021-07-19 04:20:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d686e82c924427972cacce37df40ed36 SHA-1: 77fe58032b498a14ab42ccce9b6329ec7b58baca SHA-256: 4735dce0a7304b6a84112ff9a45b1ae2d4be380635321190d156891f6e3dd238
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting "free generator / game hack" lures. The document body includes text and links that reinforce this deceptive theme, aiming to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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.tw/app/835599320/free-tiktok-likes-generator-game-hack In PDF document text
    • https://beejekorf.nl/images/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://beejekorf.nl/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://beejekorf.nl/images/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://beejekorf.nl/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://beejekorf.nl/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://beejekorf.nl/images/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://beejekorf.nl/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://beejekorf.nl/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://beejekorf.nl/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://beejekorf.nl/images/rblx-gg-free-robux_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_off00002c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8C 22268 bytes
SHA-256: a7e0107c97210a3d17fc900dbe01baf9a090b08b4f70f43c6de4f146cf5c6269
font_01_sfnt_off00005e29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E29 17684 bytes
SHA-256: 5a858a9ba580e5964a46b2eec995bc00b893a7f5d7a57062f00620da516a4987