Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f5a7c9fa1b8e0f3…

MALICIOUS

PDF

71.7 KB Created: 2020-08-21 21:54:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 414d54a6fd2347881ebaec0d54d5107a SHA-1: 67062b3ba3b87ae9679eb66385b9a39aa7cd2868 SHA-256: 3f5a7c9fa1b8e0f3b0c50cd7939c8a4460e70b5580a03600c9a84b7f22d9b0c1
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to a known malicious redirector. Additionally, PDF_SEO_LINK_FARM indicates a mass external PDF link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=all+information+about+badminton. The document body, though heavily obfuscated, contains this URL, reinforcing its role as a 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=all+information+about+badminton
    • http://files.leviteministry.com/uploads/1/3/1/3/131381540/sudetubasuful.pdf
    • http://files.bethelagchurch.net/uploads/1/3/0/9/130969065/b1f17453b83367.pdf
    • http://files.dancaffreywrites.com/uploads/1/3/1/8/131856627/1998865.pdf
    • http://files.greatvalleyfarms.com/uploads/1/3/0/9/130969241/dimofimulopoxutekub.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3041/files/56837535514.pdf
    • https://cdn.shopify.com/s/files/1/0437/6064/8343/files/cells_tissues_organs_and_systems.pdf
    • https://cdn.shopify.com/s/files/1/0448/2508/4065/files/como_identificar_las_bobinas_de_un_motor_trifasico.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/geometric_progression_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0428/5916/7900/files/27957812692.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/rubisavexa.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/sawivepowazawodutab.pdf
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/5168579273.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/fuwezave.pdf
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/59582145790.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/pac_man_rom.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/hospital_waste_management_questionnaire.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_off0000de17.bin
284a1524a9cdedd7c4bfd0b79c004046d1723d3e6325f0e6cf9515fedef334d6
pdf-font-stream PDF embedded font (sfnt) at offset 0xDE17 5004 bytes
font_01_sfnt_off0000eef3.bin
4010edba1199296419f5022535f1023200bc6626fe47f1aeaec38aa541f1f130
pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF3 10268 bytes