Malicious PDF — malware analysis report

Static analysis result for SHA-256 e956e4c028b87265…

MALICIOUS

PDF

46.0 KB Created: 2020-08-29 12:29:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82d962f5a643e39dfb71205b9c7ff093 SHA-1: ad5b948e8476d1217c86fdd006c0c56c774dde5d SHA-256: e956e4c028b8726576d9aa69f0cbc4b38696c54115ff7819f8e29b06ab7ed1e6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=fizik+%25C3%25B6dev+kapa%25C4%259F%25C4%25B1+pdf'. This indicates the document's primary purpose is to lure the user to a malicious site. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to benign content, likely as a camouflage or SEO manipulation tactic. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence for this assessment.

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.
  • 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.
  • 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=fizik+%25C3%25B6dev+kapa%25C4%259F%25C4%25B1+pdf
    • https://static.usrfiles.com/ugd/ace02d_a2a0b40bc0d74b5dae796a29ebc49d39.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7b843f1e83749d39fba0c89e809f944.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f430eee9e9b442993b1fc04c3d562ac.pdf
    • https://static.usrfiles.com/ugd/b8c837_da1b1a8103a14a45aa0ef5dd491053d8.pdf
    • https://cdn.shopify.com/s/files/1/0438/8857/4632/files/niletefiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/4176/7072/files/byte_of_python_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/dictionary_english_to_urdu_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/bovidulusanikejen.pdf
    • https://cdn.shopify.com/s/files/1/0433/8856/7706/files/tukarunadifilu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/45541119558.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8541/files/american_english_file_book_3.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8902/files/84995963472.pdf
    • https://cdn.shopify.com/s/files/1/0437/1234/8315/files/accounts_receivable_process_interview_questions_and_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000664d.bin
742367b06df39edf1bdc0eca58d937f5ff10ac7e6f002fc8b91d7720e84e3e1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x664D 4748 bytes
font_01_sfnt_off0000769b.bin
b6415c9ddca1a03d48585c98918817aa4aa6a75450dbd673ea08dc1b7b21dcdc
pdf-font-stream PDF embedded font (sfnt) at offset 0x769B 11952 bytes
font_02_sfnt_off00009b91.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B91 4324 bytes