Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39ca8a4e0e97189…

MALICIOUS

PDF

65.5 KB Created: 2020-08-24 00:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5040b85191b02558a70a69bf9c2cce9d SHA-1: 2daac07ed8ee12e455ae348691051db5ef39e47a SHA-256: e39ca8a4e0e97189d3721d2c78b6e2a50605653f906d0ec6a93ee673187dda36
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=cheap+thrills+song++djpunjab'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL and a Shopify URL, suggesting these are the primary lures. No scripts were extracted, and the PDF structure itself does not indicate exploit activity, leading to the conclusion that this is a social engineering lure.

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.com/pify?keyword=cheap+thrills+song++djpunjab
    • http://files.thebearsdencafe.com/uploads/1/3/1/4/131437669/dutunituluneku.pdf
    • http://files.nashreconnectivehealing.com/uploads/1/3/1/4/131452958/330b1cf6ccf.pdf
    • http://jojuka.birthbydesigndoulas.com/uploads/1/3/2/7/132712615/kidupelekiwalobaxuli.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/kofifogi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7482/9987/files/resemixapoleritoxato.pdf
    • https://cdn.shopify.com/s/files/1/0438/4981/0070/files/13563664307.pdf
    • https://cdn.shopify.com/s/files/1/0433/7706/6135/files/8429624909.pdf
    • https://cdn.shopify.com/s/files/1/0466/2856/9253/files/2016_curriculum_guide_in_filipino.pdf
    • https://cdn.shopify.com/s/files/1/0434/5308/7911/files/appendix_science_report_example.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/71149987983.pdf
    • https://cdn.shopify.com/s/files/1/0432/7129/1035/files/tata_motors_aptitude_test_papers_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/8086/8255/files/antero_midstream_partners_lp_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4934/files/alternating_current_class_12_notes_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/83888629478.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_off0000a11d.bin
2c10fb81ec92f93b1f4f2814a3419bb0969169956e6966793957f35fb0c5edf1
pdf-font-stream PDF embedded font (sfnt) at offset 0xA11D 5340 bytes
font_01_sfnt_off0000b338.bin
dbfaea3db6a702adb9e46bc3d813db5d0eec54f374db1797e996a7f4ac9b51ff
pdf-font-stream PDF embedded font (sfnt) at offset 0xB338 16060 bytes
font_02_sfnt_off0000e4bf.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BF 16036 bytes