Malicious PDF — malware analysis report

Static analysis result for SHA-256 526be5bb96542a6f…

MALICIOUS

PDF

41.4 KB Created: 2021-05-22 06:05:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f273b60be1de1388005e7c575e19ad97 SHA-1: c8c5f3cf6a03623608c525beb2d32f642df3363c SHA-256: 526be5bb96542a6fcd31a573f454b270a4400968e02bb866e59cae46d63625b5
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as generators for game currency or hacks. The document body also contains text and links related to these lures. While no scripts were extracted, the presence of malicious links and the invoice/download button lures strongly suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7534

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/479516143/how-to-get-a-free-minecraft-server-game-hack In PDF document text
    • http://www.primeinformatica.it/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://www.primeinformatica.it/images/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • http://www.primeinformatica.it/images/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.primeinformatica.it/images/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://www.primeinformatica.it/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000036d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36D8 29044 bytes
SHA-256: ad3a2835a03e75bae4190250b5fa78b69cce05b2e6d7cbd6ca6cc4ef992864f5
font_01_sfnt_off0000777c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777C 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000818b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x818B 17988 bytes
SHA-256: 888c9dccd83fb0c13f9447925305c3d56d9429efcbe621f5ab8e9b5d24de1b14

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