Malicious PDF — malware analysis report

Static analysis result for SHA-256 59e3a1e6ad7f8520…

MALICIOUS

PDF

42.2 KB Created: 2021-05-12 00:06:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2d508baea88420caffe19bfdc8c44b23 SHA-1: 525c0909421e57379803253bb1ae1808ce0317b7 SHA-256: 59e3a1e6ad7f85201fbe0a0c58c91b468d4c1e6da4d00a325f8e8f09990ebbb1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically advertising 'free generator / game hack' lures. The ML classifier also flagged this PDF as malicious. The embedded links and the document's content suggest an attempt to trick users into visiting potentially harmful websites, likely for credential harvesting or further 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/431946152/hey-google-how-do-you-get-free-robux-game-hack In PDF document text
    • http://gc-sistemas.com.ar/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/roblox-a_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://gc-sistemas.com.ar/images/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://rblx.landIn 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_off000047df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47DF 24300 bytes
SHA-256: 91f74b424a9409ae45ec0b539621b768c0b2d9f8965318872221955c862ade33
font_01_sfnt_off00007fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC2 19156 bytes
SHA-256: 2eaf05fb5b81c851c34d40d7c07e26ddd9b324a9c4f95fd917841cb6815dc612

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