Malicious PDF — malware analysis report

Static analysis result for SHA-256 501aaa9fa6d02313…

MALICIOUS

PDF

37.2 KB Created: 2021-05-21 01:03:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 032d6e371c3c000f5a28da28830f5ef1 SHA-1: 19432017dc8e744105f9353f8331baee605683fc SHA-256: 501aaa9fa6d02313e9323d15c0642c5e180c418e06a808573cf53d0b70372155
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The primary redirector URL is https://netcdn.xyz/app/479516143/free-minecraft-pe-server-game-hack, which is associated with known malicious activity. The document body and embedded links suggest a lure to download or access further malicious content, likely leading to malware execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-pe-server-game-hack In PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/robux-giver_GM431946152.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://www.nelsonssales.com/media/storage/editor/files/how-to-get-free-robux-gift-cards_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_off00003532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3532 26424 bytes
SHA-256: f5d785f9716c544a27baea58eb46389a26175681a134b499f0411819ed6b9e90
font_01_sfnt_off0000717d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x717D 17836 bytes
SHA-256: 40ba9e4e6a96b9fbdb66fe1c3cdc29181d81f4b56a4eeac74a5dcf6bc0460396

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