Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67d40dd4ea4be55…

MALICIOUS

PDF

45.3 KB Created: 2021-05-16 02:53:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df9d2ca601cc48a24fb23cec2af31826 SHA-1: eb3c289b5e3bb24998feab726a62237618aa4458 SHA-256: f67d40dd4ea4be5591f64333544343b92c01b0a0a5300b0f69269b72aec59755
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector infrastructure, specifically promoting "game hacks" and "free spins". The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click these links, likely to download further malware or engage in scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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/daily-free-spins-game-hack In PDF document text
    • https://www.rondeberg.com/images/coin-master-tips_GM406889139.pdfIn PDF document text
    • https://www.rondeberg.com/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://www.rondeberg.com/images/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.rondeberg.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.rondeberg.com/images/game-hunters-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.rondeberg.com/images/mcpe-client_GM479516143.pdfIn PDF document text
    • https://www.rondeberg.com/images/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • https://www.rondeberg.com/images/wurst-115_GM479516143.pdfIn PDF document text
    • https://www.rondeberg.com/images/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • https://www.rondeberg.com/images/what-is-robux_GM431946152.pdfIn PDF document text
    • https://www.rondeberg.com/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://www.rondeberg.com/images/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.rondeberg.com/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • https://www.rondeberg.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.rondeberg.com/images/i-need-robux_GM431946152.pdfIn PDF document text
    • https://www.rondeberg.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.rondeberg.com/images/roblox-g_GM431946152.pdfIn PDF document text
    • https://www.rondeberg.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.rondeberg.com/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.rondeberg.com/images/free-robux-hack-generator_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
font_00_sfnt_off00004ca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA9 25028 bytes
SHA-256: f65811caf7a7cce0c82883c1aa7b5e4df99540c3c138369ad8d31d4066278e3d
font_01_sfnt_off000085ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AE 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F51 18064 bytes
SHA-256: c13d24b09dacab53a31a9a34c8affe100c305689843df97e3c31ade46cbd1ed9

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