Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda067bed0c4a75b…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 06:29:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 3541960699224f5fa2fca70e1117ccc5 SHA-1: 00ad623d9479bfe7f52ccbfbc46cfc0e3a02f2ed SHA-256: eda067bed0c4a75bf5be0922a5426afd74cb2cda4c8cc9dd55b86161dc3e3ed3
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors, including one that masquerades as a 'game hack' lure. The primary malicious URL identified is https://netcdn.online/app/431946152/how-to-get-roblox-premium-for-free-game-hack. This suggests the document is designed to trick users into visiting a site that likely hosts a malicious payload or further phishing content. No scripts were extracted, but the presence of multiple malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.online/app/431946152/how-to-get-roblox-premium-for-free-game-hack In PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/roblox-hack-client_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_off00005615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5615 25644 bytes
SHA-256: 90534dc5e2d101ac5b1c4ec77afdabfdeb85165053943abf0f1d77773a4978b3
font_01_sfnt_off0000904b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x904B 18888 bytes
SHA-256: 80296d3e833823be7f1e21571c517a003a5ed5633da55eadbe5c2ecc0576c034

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