Malicious PDF — malware analysis report

Static analysis result for SHA-256 b269135fa764ea10…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 13:32:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2a1afc0bb62ce27185668bffa4e051a9 SHA-1: 73463344a47bc522514498b58da7992f9771fc8a SHA-256: b269135fa764ea1084f1a2473bc478f063eca164c0577e077562a388f4e079c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that redirect to a known malicious infrastructure, masquerading as a 'game hack' generator. The document body and heuristics indicate a lure for free game items, likely leading to a phishing or malware download site. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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-blogspot-april-2021-game-hack In PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/tiktok-free-view-quest_GM835599320.pdfIn PDF document text
    • http://lib-smansumsel.sch.id/repository/free-spins-coin-master-twitter_GM406889139.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_off00004fba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FBA 24236 bytes
SHA-256: d69f26fa0af8195a00290e802f009da0d9574667800aa86f6059c93522b09c11
font_01_sfnt_off00008754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8754 19036 bytes
SHA-256: abaaef8123abf70c91d1a0f07b1f9da735168a40db37009f502544eec5993ff1

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