Malicious PDF — malware analysis report

Static analysis result for SHA-256 2087e5d65bde2b89…

MALICIOUS

PDF

43.7 KB Created: 2021-05-14 18:17:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a861031241d274bf58c1d029305fa925 SHA-1: ab2b3b680013587166b225dc539b9cd8430997ae SHA-256: 2087e5d65bde2b8942b8cbeb2b609672358fcc95bbe555867cdc6c89cedf8762
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to known malicious redirector infrastructure, which is a strong indicator of malicious intent. The document body, though partially corrupted, contains references to game hacks and includes URLs that likely lead to further malicious content or phishing pages. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/406889139/https-iosgods.com-topic-20218-flip-master-coins-hack-game-hack In PDF document text
    • http://bf-sozidanie.ru/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-minecraft-skins-pc_GM479516143.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://bf-sozidanie.ru/images/buxblast-com-robux_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
stream_003_off00004a90.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A90 25440 bytes
SHA-256: ea394357bf3da5386a289c7fa1773ee96795c27b0273039cdf36c28f99eeabb3
font_01_sfnt_off000084b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84B6 19568 bytes
SHA-256: ba0c2357841514b25ef677c789633d0ce20c859ae160f909f0b7ccd586883e8f