Malicious PDF — malware analysis report

Static analysis result for SHA-256 8000d9ff8dff650e…

MALICIOUS

PDF

48.3 KB Created: 2021-05-15 05:07:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: d08e670ea95e4e300c4a71d660a6a18c SHA-1: c9c3ce4c83eff23a66ecc483372b66770f1677b5 SHA-256: 8000d9ff8dff650e94ff9d1807ed4564aabd48b8cfd163a04590ac7d347db9a4
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links to external URLs that are flagged as malicious redirectors, suggesting an attempt to deliver a second-stage payload. The document body and extracted URLs promote game-related cheats and hacks, indicating a lure to entice users to click and download potentially harmful files. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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 https://netcdn.xyz/app/479516143/minecraft-hacks-1.15-2-game-hack In PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-heaven-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://hosoffices.com/ckfinder/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://education.minecraftIn 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
stream_003_off00004db2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB2 29976 bytes
SHA-256: 3373a7878f4b412a0dc0cbb8a6c5113822427c6a351246a7310fb67ca0490b93
font_01_sfnt_off000090b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90B8 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00009b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B2A 18168 bytes
SHA-256: 304447a64c9c9da34caed164523f062cdaeb71933cc5e9c334f07884a33f2f76

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