Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdeb900ef22a66ae…

MALICIOUS

PDF

36.9 KB Created: 2021-07-02 05:32:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 48cc1a2acc45e70887358550bbba3c50 SHA-1: f366eb591f7bf98f5feaa68442f64259ddc89147 SHA-256: cdeb900ef22a66ae251ddb7cd0b56dfac59975f2e3a72692c3c030a054855c34
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, specifically http://netcdn.co/app/431946152/games-on-roblox-that-will-give-u-free-hat-youtube.com-game-hack. This heuristic, combined with the ML classifier flagging the document as malicious, strongly suggests a malicious intent. The document body and embedded URLs indicate a lure related to free items or hacks for games like Roblox and Coin Master, likely leading to a malicious download or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.co/app/431946152/games-on-roblox-that-will-give-u-free-hat-youtube.com-game-hack In PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-to-get-a-free-quirk-in-boku-no-roblox_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-roblox-gift-card-codes-2021-april_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/noob-vs-pro-vs-hacker-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/roblox-jailbreak-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://apartmani-mestrovic-krk.hr/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.apartmani-mestrovic-krk.hr/files/free-coins-coin-master_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
font_00_sfnt_off000035a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A2 22836 bytes
SHA-256: c9281468786c25b7e8c5734db10b763352c07150b636e829df72f16c5e991d63
font_01_sfnt_off000068df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68DF 19980 bytes
SHA-256: 2f2caeffe391ef47b4b32d55d6034232d44add93cb4227d6b8d97187f865771f

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