Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf72080133f3289…

MALICIOUS

PDF

47.3 KB Created: 2021-05-15 10:02:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5e72f39c03f17e0df4aa79fbaddaa4f0 SHA-1: f7c809b97e02be8aa66d0ee246c0ff28e4fd2acc SHA-256: 1cf72080133f3289239e6e2697d1a3eb005681ae775ad66b04ce0d354457e3a4
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirector infrastructure, specifically targeting users with lures related to hacking Roblox accounts. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/how-to-hack-someone In PDF document text
    • http://apteka-ot-sklada.com.ua/images/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-coin-master-spins-and-coins-for-daily_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/roblox-weird_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://apteka-ot-sklada.com.ua/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn 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_off00004b3f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B3F 27472 bytes
SHA-256: 1fce4666f83e6be6689ac91d2e33af8f0e90e417dbfb4bcdcefffd3ca9da2ad6
font_01_sfnt_off00008974.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8974 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9325 19316 bytes
SHA-256: 0830f2bc2b032c7ad37be74462a8461862374830fa053aba1852b18e492c5f08