Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c845d31cb898c2…

MALICIOUS

PDF

36.3 KB Created: 2021-05-22 11:37:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 58e850ac44b5392ac7c228940166b8c9 SHA-1: dd3408cd67abd8a32cc22d704be78225767f0d4d SHA-256: 93c845d31cb898c268233c8ba7a571ce50421a427066c581a3e596fc90dd4751
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors, including one explicitly identified as malicious and associated with 'free generator / game hack' lures. The document body contains text and links related to free game hacks and generators, aiming to trick users into clicking. The presence of multiple PDF-specific heuristics related to malicious redirectors and lures strongly indicates a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/minecraft-multiplayer-free-game-hack In PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://megapolgroup.com/ckeditor/ckfinder/userfiles/files/roblox-promo-codes-for-free-robux_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_002_off0000346a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x346A 25328 bytes
SHA-256: 82fa93ca1afeeff73fa2238996e985c90f8ca4aeda34d9e5e899596f748dd1c6
font_01_sfnt_off00006d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D48 18136 bytes
SHA-256: 22c65de64af2721f6fc37241b86838ece151de043079d0e804f5da14bd34918b

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