Malicious PDF — malware analysis report

Static analysis result for SHA-256 222394bc5b4e1d09…

MALICIOUS

PDF

48.8 KB Created: 2020-07-31 06:54:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c9c941cacb33a1828553f01d4e98abd SHA-1: 36b8c15a34c1c8143a1b69fa92584af05d0736b1 SHA-256: 222394bc5b4e1d097cd2fb4e2e1db18bf1fda3f031be24b9a7e70f4ba7107346
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'ttraff.cc'. It also exhibits characteristics of a PDF link farm, with numerous links pointing to external PDFs, many hosted on Shopify. The document body, though heavily obfuscated, suggests a lure related to 'creative thinking tools and techniques PDF'. The primary attack pattern involves social engineering to trick users into clicking a malicious link, likely leading to further compromise.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/pify?keyword=creative+thinking+tools+and+techniques+pdf
    • http://files.eveshealth4life.com/uploads/1/3/1/4/131453623/6483248.pdf
    • http://files.u-fit.org/uploads/1/3/1/3/131381078/tulifubor.pdf
    • http://files.bartletthw.com/uploads/1/3/0/9/130969971/pavofewuvakoritemil.pdf
    • http://files.cailenfu.com/uploads/1/3/1/4/131437444/rutez_wubusaxofab_kajali_zuwogor.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5911/files/wudumoxoviwu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7099/4085/files/fonagegikulupovofora.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/79178940649.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/22677416947.pdf
    • https://cdn.shopify.com/s/files/1/0432/5294/0968/files/30712653373.pdf
    • https://cdn.shopify.com/s/files/1/0428/7492/9308/files/jujakag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24221046066.pdf
    • https://cdn.shopify.com/s/files/1/0433/6317/2502/files/1587856546.pdf
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/64101197989.pdf
    • https://cdn.shopify.com/s/files/1/0428/6955/5359/files/kudotejajijozidubukage.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3294/files/32510496191.pdf
    • https://cdn.shopify.com/s/files/1/0437/1664/0923/files/norelobufimuxakidupel.pdf
    • https://cdn.shopify.com/s/files/1/0433/1061/2635/files/45864157473.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.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_off00007fda.bin
c9f0576222ceeb8fc73e3cc0c97aed87f42da5aeb561f3e62ca052cb0bcf1c4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FDA 5572 bytes
font_01_sfnt_off000092c1.bin
1346a0e9862852faaa09bf28ecdc84193e647827c10078309f9d906964ba79c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x92C1 10272 bytes