Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0c7b34958b1523…

MALICIOUS

PDF

48.2 KB Created: 2021-05-15 11:13:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 82a3f2ecf81ed04b8b2349e3fc37ea30 SHA-1: 89f0eacfef9dd0450d39493a592fdb45e48d01a4 SHA-256: ba0c7b34958b15237e91a04c5920daa0546af21e6e4b38a179b592e014c4ed50
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' to lure victims. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-sites-that-work-game-hack. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.xyz/app/431946152/free-robux-sites-that-work-game-hack In PDF document text
    • http://gods-own.org/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • http://gods-own.org/images/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-free-spin-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://gods-own.org/images/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gods-own.org/images/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49FF 29068 bytes
SHA-256: 15a519e66524874e9e6588f4e781b78e2e66019701f41fd1689908927ed58d2b
font_01_sfnt_off00008ae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE1 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000097f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F3 19000 bytes
SHA-256: c0bc6bb0706fab35ff455fc4816471a1ab7f6ae4486f691ef98043b3efa3f18d

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