Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1e8bd333381acf…

MALICIOUS

PDF

35.5 KB Created: 2020-08-10 17:43:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9586497d95e9ff795c30b0297fa5e968 SHA-1: 30b9eb531bef9eb9d427cb2c7bc9ac5472ee6fe5 SHA-256: 7b1e8bd333381acf647f7488d2e85fe56142d8c811d2128fe21f9199a967e2c0
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirect. This suggests the PDF is designed to act as a lure, directing users to malicious content via the ttraff.cc redirector.

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/pify?keyword=los+milagros+existen+brian+weiss+pdf
    • http://files.bsmart.be/uploads/1/3/0/7/130739945/3591645.pdf
    • http://files.davidemmons.net/uploads/1/3/1/4/131453698/31164a814ee7.pdf
    • http://files.tucniagara.com/uploads/1/3/0/7/130740033/58967e0.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/discrete_math_and_its_applications.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/17533951208.pdf
    • https://cdn.shopify.com/s/files/1/0433/8266/9464/files/51312958273.pdf
    • https://cdn.shopify.com/s/files/1/0433/1791/9909/files/limigozoke.pdf
    • https://cdn.shopify.com/s/files/1/0437/7742/5565/files/budget_spreadsheet_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/check_stub_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/3619/7542/files/buvuliroritemowidavizije.pdf
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/57486707499.pdf
    • https://cdn.shopify.com/s/files/1/0432/7840/1700/files/dobuwawesivofugovu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/single_variable_calculus_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/nexurutimusefamowaliju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdf
    • https://cdn.shopify.com/s/files/1/0448/3599/5808/files/ubuntu_iso_to_usb.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_off00004adc.bin
051cf47602a5dc7deaff88a24bd6167a1515545a25bb20caa7de8ef95c7cd056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ADC 5604 bytes
font_01_sfnt_off00005de2.bin
e4d1a1f73322fe1bd34b45d5f4d4a9f9ec461b89f5e809889e3bf4d655d8470e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE2 10792 bytes

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