Malicious PDF — malware analysis report

Static analysis result for SHA-256 b22888d228024165…

MALICIOUS

PDF

35.8 KB Created: 2021-05-24 01:05:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1f81ff7bc41a3e9486adc61c5741f2d9 SHA-1: becbc955b004eb5fb17fcd47d322c42c50d439b0 SHA-256: b22888d228024165208f338f91ed2f798dee18d18b84e22690abb082e77df0e7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, including one that masquerades as a free Minecraft generator. The document body and heuristics indicate a lure to download or access potentially harmful content. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to exploit kits or malware download sites.

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/479516143/free-minecraft-alt-generator-game-hack In PDF document text
    • http://papelesyempaques.co/images/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
    • http://papelesyempaques.co/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://papelesyempaques.co/images/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://papelesyempaques.co/images/blox-best-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
font_00_sfnt_off000033e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E6 24952 bytes
SHA-256: d5e445ef44c2313ba16eb04f04943551e992943c9543dd380700146b63d21365
font_01_sfnt_off00006c0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0B 17784 bytes
SHA-256: 66ae3cfb6d310f144f42187aaa203441353bb0cc88c1a3915b2f7a14fa3c41b8

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