Malicious PDF — malware analysis report

Static analysis result for SHA-256 96cb03229e6fd60c…

MALICIOUS

PDF

44.9 KB Created: 2020-08-30 20:01:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dba172da4357cde9839a3b2f5927e27 SHA-1: 0b8f577c3fa8162b0d5252c735c5fb48394f000d SHA-256: 96cb03229e6fd60ceb77fce4171d8df3ff5f9b38f5e080b995a4aa3fd2f32604
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to a URL designed to lure users into downloading cracked software. It also exhibits characteristics of a PDF link farm, with numerous links to external PDFs, likely for SEO manipulation. The document body, though heavily obfuscated, contains the target URL and mentions 'intelliscore ensemble 8.1 crack', reinforcing the phishing lure. No scripts were extracted, but the presence of a malicious redirector and the deceptive content strongly suggest a phishing attempt.

Heuristics 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.cc/wix?keyword=intelliscore+ensemble+8.+1+crack
    • https://static.usrfiles.com/ugd/b8c837_736f5ea4b2b1488188eed9c4b98ec757.pdf
    • https://static.usrfiles.com/ugd/9ea9b6_4871628f791742d6a33bb19d485a87fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_2b0b0bfba6b743bebedf975decc995d1.pdf
    • https://static.usrfiles.com/ugd/4826f5_575f929baae84f65bf7c465929e87b62.pdf
    • https://static.usrfiles.com/ugd/9ec29b_63c2cb7c9b9e4899ab24aa4575fc3e2e.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/zaxomolewisoferosof.pdf
    • https://static.usrfiles.com/ugd/cc089a_0dacc52a1a50413084b12dfb3c2f880c.pdf
    • https://static.usrfiles.com/ugd/b8c837_acbe67c5670a45ecb7dbe5837abaf431.pdf
    • https://static.usrfiles.com/ugd/b8c837_89b0327fe74e416990a6dc0013402122.pdf
    • https://static.usrfiles.com/ugd/b8c837_22e15d914cc34657a0397e54a8e1e26e.pdf
    • https://static.usrfiles.com/ugd/b8c837_674d24bdb85f409d928bbb56dd4c8cc0.pdf
    • https://static.usrfiles.com/ugd/b8c837_2543ab1ed7d14a999ebfdb3c54418f23.pdf
    • https://static.usrfiles.com/ugd/5a1791_f246f4da6a0041148391a9edd36c725b.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_a489fa5821d64e82b54717197272d124.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f9b.bin
1777b23f0fb81d03e877c2d70301bcab29f850555e72039b6963fa021e3a5f3f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9B 5364 bytes
font_01_sfnt_off000081c5.bin
2c19cbe2a17db4ca9793f4705b6ddd3f986c4b44687debd207d54af8ac660d2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x81C5 10820 bytes