Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d18fd932e9bb37…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 09:38:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 95ae24e0256086324e274de8393e7078 SHA-1: 63d16e33e6dc76fe1bde2472bd9a54070aab0cef SHA-256: f2d18fd932e9bb37033cd504e551d40a6bed036e95336687bf2fea11be4d15f8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector. The document body and heuristic firings indicate a lure for free Robux or game hacks, which is a common social engineering tactic. While no scripts were explicitly extracted, the presence of malicious links and the nature of the lure suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-generator-no-verification-2021-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robux-website_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-promo-codes-for-roblox-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_off000049b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49B4 24580 bytes
SHA-256: 672725b1024664bac0a8a83de816ce5aa3bbc26128bcd5d4460e8e42b34ff9d2
font_01_sfnt_off0000824f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824F 19004 bytes
SHA-256: d45ec0ea85e3f4da21cb27ccd2cd6df352304457fff04a0939a67aeffe4f8bf1

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