Malicious PDF — malware analysis report

Static analysis result for SHA-256 5926384e1c74a27e…

MALICIOUS

PDF

35.3 KB Created: 2021-05-21 19:10:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fa6d9f786b83be01dc2f871caff91be4 SHA-1: 6d70a87c3ff393184d7fc0da0530d50925e631c5 SHA-256: 5926384e1c74a27eaae57d64abbd836d122b943eb212e5c40776139cf4465a4f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and websites, disguised as 'free generator' or 'game hack' lures. The ML classifier also flagged this PDF as malicious. The embedded URLs and the heuristic firings indicate a clear attempt to direct the user to potentially harmful content, likely for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/431946152/free-gfx-roblox-game-hack In PDF document text
    • http://inextpresident.com/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://inextpresident.com/images/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://inextpresident.com/images/rbx-com_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_off00002f44.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F44 25012 bytes
SHA-256: 56da2fa9cb01dc22cc58eb2abf1657d94a9c921f6b8f550bd3fb1f22bae2d7f3
font_01_sfnt_off00006964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6964 17948 bytes
SHA-256: 93c837e91696f9c750ee981a8553ec938bcc839a54d12736034a756f397dcd55

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