Malicious PDF — malware analysis report

Static analysis result for SHA-256 414474af853d1e47…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 22:07:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 42ade5b80419eac6b97f967b0cc7ed3c SHA-1: e54c95f6141b263ab6d31aca8ec587169b8582bd SHA-256: 414474af853d1e470072b8c7f3729667a802b08a89317649b4891d81b0a375cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary malicious link identified is https://netcdn.online/app/406889139/coin-master-free-spins-link-today-facebook-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious workflow designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/406889139/coin-master-free-spins-link-today-facebook-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-fly-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_004_off00004e11.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E11 25284 bytes
SHA-256: c0c3f8b8c3e533a505a7b5c413f97b56b8b139cd9cc9a2210005117eec202e33
font_01_sfnt_off00008760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8760 18568 bytes
SHA-256: 976bad0f84eadf36fe6397f68da5c043a767fda9c526d6325df07f5c92c7ef85