Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f59f9f436657eb…

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 17:03:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ee7b36736db5b6dbf3686a2619bbdff0 SHA-1: 2dcec6c7f2c1e3d885bbd34be5930ba2718bd4ea SHA-256: 93f59f9f436657ebfd32914be113d7f4d36d144e9bacca8962f66170b3d2936c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free spins. The heuristic firings confirm that the PDF links to a known malicious redirector and is designed as a lure for game-related cheats. While no scripts were explicitly extracted, the embedded URLs and the nature of the lure suggest an attempt to drive users to potentially malicious websites for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/i-need-more-free-spins-on-coin-master-game-hack In PDF document text
    • https://www.ausecus.com/images/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/robux-codes_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://www.ausecus.com/images/free-roblox-app_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/rewards-robux_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/roblox-skin-free_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • https://www.ausecus.com/images/free-robux-android_GM431946152.pdfIn PDF document text
    • https://www.ausecus.com/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://www.ausecus.com/images/how-long-is-the-minecraft-free-trial_GM479516143.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
stream_003_off00004a28.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A28 24584 bytes
SHA-256: 98bfc5d640966329a5db8cf55785dc642a5873b8b6e11c2eef197d7a0b1b89ae
font_01_sfnt_off0000827e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x827E 18060 bytes
SHA-256: ad4285fb5a52de3974d4505312da4d4cfb1c9ac2c9b172831f0c962a0fab101d

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