Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae3fb4b31f32c0c…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 20:54:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c335e81aa1c50644ba76909bd97282c4 SHA-1: 7b696e848361527057c5c642417b0e8e9942e8d2 SHA-256: eae3fb4b31f32c0c46f089dbe59be2d89c7c80b83224eb4634d884c11ace11eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote free game currency and hacks, specifically directing users to the URL http://netcdn.tw/app/431946152/free-robux-cards-game-hack. This URL is identified as a malicious redirector, indicating a phishing or scam attempt. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-cards-game-hack In PDF document text
    • https://www.ma-plast.hr/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-robuxgg_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-shirt-template-transparent-free-shipping_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-jailbreak-hack-com_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-2021-legit-feb-unpatched-instantly-no-wiat_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/tycoon-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-coin-master-gold-cards_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coinmaster-links_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-hack-clients-virus-free_GM431946152.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
font_00_sfnt_off00002ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE3 22156 bytes
SHA-256: 67b00dc96e987e98a3cf6a5090751b049346d2afdbdfb12ccfff9c0e14083fae
font_01_sfnt_off00005ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF5 18888 bytes
SHA-256: 6c6de0ceaed5fc014d3dcce92ca1cb896bf7995edf6e50a0e815779b2f83a656

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