Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa301db62ecfb50…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 07:32:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 069086a1cc554ab15607748a7db9c276 SHA-1: 26def9e22afb1735d2cae2cc412301f2eadab168 SHA-256: 4aa301db62ecfb500e84a8e1c42cd8c956369a7bfc3b250966e21c1e97557d2e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generators' and 'game hacks'. The primary lure URL is http://netcdn.co/app/406889139/coin-master-free-spin-and-coin-links-game-hack. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/406889139/coin-master-free-spin-and-coin-links-game-hack In PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/cheat-code-roblox-bubble_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/2021-robux-free-host_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-codes-real-2021_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_off00002ee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE4 22424 bytes
SHA-256: af3369d26a7e28b5820d0dafd38a0840adbb9fcf698c1449ce0114d403ca894f
font_01_sfnt_off000060f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F9 18520 bytes
SHA-256: d69a0a2edd95f9e38b96bcbf992a69ddda142703a71f9cfee81eaec1a075863f

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