Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e42fc3f72e2c40b…

MALICIOUS

PDF

41.3 KB Created: 2021-05-15 10:54:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 97ebbdce72aff7cdf1ec6e8a43884425 SHA-1: d473ef61e2da95820f1b1c7ad2b0abd0580eae71 SHA-256: 5e42fc3f72e2c40bc5ea65eca4d3993426edad53e39b2c9dc0241b503befdf52
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to a 'free Minecraft generator' lure. This link, https://netcdn.xyz/app/479516143/free-minecraft-generator-game-hack, is designed to lead users to potentially harmful content. The presence of numerous other PDF links on the ocic.hr domain suggests a pattern of distributing malicious documents. No scripts were extracted, but the document's structure and embedded links strongly indicate a social engineering attempt to trick users into navigating to malicious sites.

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/479516143/free-minecraft-generator-game-hack In PDF document text
    • http://www.ocic.hr/files/roblox-free-wings_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/dailyrobux_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/game-toolbox_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.ocic.hr/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/wurst-commands_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/www-rbx-com_GM431946152.pdfIn PDF document text
    • https://sigmaclient.info#2In PDF document text
    • https://flux.today#3In 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_off000047c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47C2 25060 bytes
SHA-256: aa07edccedaae1d6f0df8cb138c7ebf5c665786e123912d9ced572f98abccd9f
font_01_sfnt_off000080a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A2 17712 bytes
SHA-256: 2ba423467bb34654934421079a82fe93ae3f0cf8ad50d4b3792d5c3eca35bf12

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