Malicious PDF — malware analysis report

Static analysis result for SHA-256 706ea637873f10e2…

MALICIOUS

PDF

41.3 KB Created: 2021-05-15 05:49:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e4e5c4e95772f8112048c48f6d5ebeb SHA-1: 0346d75fee80d741b5b1c194759bb37ef812c781 SHA-256: 706ea637873f10e25a8cebdf6ed65ad4e91d307489230bd33d9ea4a04826c0a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a malicious URL. The document body, though partially corrupted, contains text related to 'free generator / game hack' and a URL that aligns with this lure. The presence of embedded URLs and the overall structure suggest an attempt to trick the user into visiting a malicious site.

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/406889139/80-free-spins-coin-master-game-hack In PDF document text
    • https://www.prodex-holz.cz/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/krnl-download_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • https://www.prodex-holz.cz/images/free-roblox-clothes-boy_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
stream_003_off0000471b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x471B 24828 bytes
SHA-256: 563ef0f63cf5ac1ae2a7c5ee9eb6d831433265a3c70e9ec184413991ab024fe5
font_01_sfnt_off00007f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F16 18268 bytes
SHA-256: c17bdfe55bcf294db1fa8b97ef7603a16e409092d20395243f391f783e354714

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