Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f8ebbb6d65c05a4…

MALICIOUS

PDF

38.5 KB Created: 2021-05-30 04:11:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fc83b78e63b46e14de9445d72c33b49b SHA-1: 3bfdda8d97374f0f8421297a521c8a46cd393e14 SHA-256: 7f8ebbb6d65c05a45d2296aa966d6fbc5d67a38eb4db66e635274aa19d1e91a0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as offers for free game items or hacks. The ML classifier also flagged this document as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to redirect users to potentially malicious websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8476

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/479516143/free-minecraft-pe-server-game-hack In PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-robux-group_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • https://porownywarkaleasingowa.pl/wp-content/uploads/fsqm-files/free-minecraft-website_GM479516143.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
font_00_sfnt_off00003598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3598 24484 bytes
SHA-256: 3767ef50cd2af48851aa8e94cdf13946bfec9bd52cc1613f42a4911379cf7d31
font_01_sfnt_off00006cc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC2 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off00007668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7668 17836 bytes
SHA-256: 40ba9e4e6a96b9fbdb66fe1c3cdc29181d81f4b56a4eeac74a5dcf6bc0460396

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