Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1ff47a40759d96e…

MALICIOUS

PDF

55.0 KB Created: 2020-09-14 16:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02e59c40afabd78b5a8fc38aaa22fd1d SHA-1: d30fd944080139ad47d77100c1a86a7b3434840b SHA-256: b1ff47a40759d96e269adaca12012715184194b31caaec0d65d5c8210550a96b
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, with several pointing to known malicious redirectors. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm strategy. The primary attack pattern involves luring users to malicious sites via these links, likely for SEO spam or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/wb?keyword=minecraft%20texture%20packs%20unblocked%20weebly
    • http://files.be-sharp.co/uploads/1/3/1/4/131406036/a2b7bc638e25.pdf
    • http://kofom.ahafeducation.org/uploads/1/3/1/4/131453526/fujaro.pdf
    • http://gurubinaf.stehrcosmetics.ch/uploads/1/3/2/6/132682006/583d518d.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/second_conditional_lesson_plan_didactic.pdf
    • https://static.usrfiles.com/ugd/cb5dea_9f8a87d25a2c4e98aa4b29bece668bfa.pdf
    • https://static.usrfiles.com/ugd/8d46c2_01407f3977c34501ad100c7df7332789.pdf
    • https://static.usrfiles.com/ugd/46a5ae_22f301b4a26440bb8a4b895e09fdbb1a.pdf
    • https://static.usrfiles.com/ugd/20d83a_c8718a4a1ff44338be9b0abd4d2aecdb.pdf
    • https://static.usrfiles.com/ugd/5b5da7_a436f4c155e74ea4b4b646529812f699.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/iet_incorporated_engineer_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82505274200.pdf
    • https://cdn.shopify.com/s/files/1/0462/2958/6069/files/46031102115.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_off00009773.bin
c4831711328926571bcd7ee757a5281ee1fee6f04dff172ef6c3a2eb7bbe9bf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9773 5620 bytes
font_01_sfnt_off0000aac7.bin
751fe0d2f1913208c05804ad281204f58aba8d18e374db2c0bc326c2abe58e8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAC7 10668 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.