Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7fc69a7586950eb…

MALICIOUS

PDF

44.9 KB Created: 2021-05-19 21:14:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e3722f9288ab4e8b936c3a304f160495 SHA-1: 00b8cb88580bdb914ac653826dc87951c0b825c2 SHA-256: f7fc69a7586950eb7ef2e0cbf9604e04420701ae44e9f2f092cdccdd9e61d66b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The ML classifier also flagged this PDF as malicious. The primary IOC is the redirector URL, which likely leads to a further stage of infection or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/coin-master-blogspot-free-spins-game-hack In PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/get-free-spins-coin-master_GM406889139.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_off00004b9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B9D 24032 bytes
SHA-256: ceb69adfc67b9e79683178eca91c7daf77fbcd545df2df03c7c8f56d5c1caa42
font_01_sfnt_off00008188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8188 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00008c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C67 18464 bytes
SHA-256: 2b0c06a22c9a5edb3443ab86616b5007231cf3140ae51cb1863842ad9c8d5786

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