Malicious PDF — malware analysis report

Static analysis result for SHA-256 44590fe659ba7504…

MALICIOUS

PDF

35.7 KB Created: 2021-05-21 15:54:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 044c2f42a6941b1d06d5c1b13468d752 SHA-1: 6927354d7a20b7268d329fcf92c2d3dd26bd7136 SHA-256: 44590fe659ba7504e58de6456454553b451d74b08d63d6960f10f3b0e5591a19
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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-hacker-skin-game-hack In PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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_off00003400.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3400 24784 bytes
SHA-256: 96ab6b025b5da6d3ce080c2595b0463cdf2f8aa96b6de7cf6a12ceec1f95cf43
font_01_sfnt_off00006c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C19 17740 bytes
SHA-256: 91fe2762de83ff68ec278d498415159af7d0ffb5c1d0151dc7294afbb77550eb

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