Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03d6d6b2f2d9a12…

MALICIOUS

PDF

42.3 KB Created: 2021-06-03 13:16:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b5a8fda2e5d296e2d952e5900683b95f SHA-1: 3c52bfb08e118fbaf80f33152827c5796ad1d06d SHA-256: c03d6d6b2f2d9a12f92cf70803c205f42dcf9a9293413ba3e3a9797eeceda847
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The primary malicious URL identified is https://netcdn.online/app/406889139/earn-free-spins-in-coin-master-game-hack. The document's content and embedded links strongly suggest a social engineering lure to drive users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/earn-free-spins-in-coin-master-game-hack In PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-pics_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/robux-giver_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/tiktok-free-names_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-hack-no-verification_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_off00004da9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DA9 23836 bytes
SHA-256: 8035a3b6d38ad3733e1ff8d4c415e42bfb73322be92b58522a710d6a613f1fbc
font_01_sfnt_off000083b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B1 17884 bytes
SHA-256: c27ada76ada0ec2a2d4f0dfd6bc904cd28eddfde4ea8d230e478e22202e815c5

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