Malicious PDF — malware analysis report

Static analysis result for SHA-256 c00dbe2272ca3a44…

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 01:21:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f5bd24f7926cc40760dce39b688867b3 SHA-1: 69e656c2f7a447a1b4bf10818651965e0c652d88 SHA-256: c00dbe2272ca3a44677376010c007d99d209edb5771a48e59ebf3dad0333948b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generators' and 'game hacks'. The primary lure appears to be related to popular games like Coin Master and Roblox. The embedded URLs are designed to entice users to click, likely leading to further malware downloads or phishing attempts.

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.tw/app/406889139/free-spins-coin-master-2021-game-hack In PDF document text
    • http://mbbs.hr/files/roblox-hack-retail-tycoon_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-hack-roblox-players-for-robux_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-hack-roblox-accounts-in-game-with-rc7_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-robux-in-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/windows-10-minecraft-free-with-java_GM479516143.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_off00002f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F66 22700 bytes
SHA-256: e9001ded0e957f52e7e2fdd29590a97b9cf99d207339d8882299863434fa2f5e
font_01_sfnt_off00006238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6238 18576 bytes
SHA-256: 461056571ca453647e3c969961301e9f27cf934f5ba6ca99c4dfe7c56792b440

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