Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb590c193b67e47…

MALICIOUS

PDF

36.4 KB Created: 2021-05-22 07:38:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9e41b5eaca02c62933a6585d1c353f8e SHA-1: c2c1f78c3bedf700c0927cd5a8ce22ccbc33a41f SHA-256: aeb590c193b67e478fad8a229fc82449f2aa52408ef21773fa480ec3d78403d9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, masquerading as game hacks or free generators. These redirectors host further malicious PDFs, indicating a multi-stage download and redirection attack. The document body and embedded links strongly suggest a lure to trick users into downloading further malicious content.

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/406889139/free-coins-coin-master-game-hack In PDF document text
    • http://easytransferbrazil.com/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://easytransferbrazil.com/images/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://easytransferbrazil.com/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://easytransferbrazil.com/images/daily-spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://easytransferbrazil.com/images/mobihack-roblox-hack_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_off00003899.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3899 23976 bytes
SHA-256: 93624feef91ae5a8bb5cf31b6fb0a3cfa51517460fc57dcebd68fc4119032175
font_01_sfnt_off00006ed2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED2 17712 bytes
SHA-256: fd51fa1b849cf95139b510f282bcd47e41e352499df1938c7ca947a320e7b070

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