Malicious PDF — malware analysis report

Static analysis result for SHA-256 45cda8937074ae98…

MALICIOUS

PDF

42.9 KB Created: 2020-07-31 16:59:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86c062c8239df8281cf1082b73ad01db SHA-1: f7219d767f72e77e976d5bd09e3ed98e0dd33e17 SHA-256: 45cda8937074ae98145fa4ebaa1478ac345951e9e473b0f3750f325240396079
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF document contains a lure to trick users into downloading a payload, masquerading as a Java update. It directs users to a malicious redirector URL, 'https://ttraff.com/pify?keyword=uninstall+java+9', which is designed to serve further malicious content. The document also includes a large number of external links, likely for SEO poisoning or to distribute the payload. The heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document explicitly instructs the user to copy and paste content into a command-line interface, further supporting the malicious intent.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=uninstall+java+9
    • http://files.cattyvisions.com/uploads/1/3/1/8/131856076/ramazurejawofurupiv.pdf
    • http://files.thecalmscribe.ca/uploads/1/3/1/3/131383665/d5963f986fdf7.pdf
    • http://files.setsunlimited.com/uploads/1/3/1/3/131378780/jelubaxuke.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/53959132468.pdf
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/rovofinavefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0018/4477/files/cambridge_fce_practice_tests_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4743/files/lerisivexivowerujowoku.pdf
    • https://cdn.shopify.com/s/files/1/0438/6160/6550/files/85450773902.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/17572942042.pdf
    • https://cdn.shopify.com/s/files/1/0428/9927/5935/files/89118027440.pdf
    • https://cdn.shopify.com/s/files/1/0434/2130/2935/files/lafapuvojaru.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/paduzodekepegad.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/30201992914.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/todaledazupawukisarovem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25781613666.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_off000061eb.bin
dce6b3b3366aa87b750155806d080d99b101a298554b3c854b24ec693424f1bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x61EB 4868 bytes
font_01_sfnt_off00007296.bin
886869d7053c39fc87578346ceee1e14c7a3634e3f98a56d95952817098c7c7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7296 13984 bytes