Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4dac9bffd6a88bf…

MALICIOUS

PDF

45.3 KB Created: 2020-08-23 11:46:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5df79e4c390045983d13df47915b38c7 SHA-1: bc15e68a64e448088d18f58b7b7da9269378b86a SHA-256: e4dac9bffd6a88bfb01eadb1310c5df8f1d190e50f65f878d39758ce9511f8b8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=invalid+email+format+example'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body contains text related to an 'invalid email format example', likely a lure to encourage clicking the malicious link. The primary intent appears to be redirecting users to malicious infrastructure.

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.ru/pify?keyword=invalid+email+format+example
    • http://files.projecthopemichigan.org/uploads/1/3/0/8/130874317/jomeravibozavozazi.pdf
    • http://ditakime.oileranimation.com/uploads/1/3/0/7/130775286/lazimunulikotutimake.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/44509177781.pdf
    • https://cdn.shopify.com/s/files/1/0431/9055/0679/files/litterature_negritude.pdf
    • https://cdn.shopify.com/s/files/1/0445/6851/0628/files/causes_of_diabetes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/duzawubemamomavokam.pdf
    • https://cdn.shopify.com/s/files/1/0435/6620/3029/files/coronation_street_theme_tune.pdf
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/99382987103.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/accepting_yourself.pdf
    • https://cdn.shopify.com/s/files/1/0435/3903/8360/files/battlestar_galactica_order.pdf
    • https://cdn.shopify.com/s/files/1/0430/5308/8921/files/75922963500.pdf
    • https://cdn.shopify.com/s/files/1/0434/0642/6275/files/verewulowifutalabowupox.pdf
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/perimeter_and_area_of_shapes.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_off00005e9c.bin
f78956c34a155e981e36ccd917b121a0b08bcd6e511a15dcc03b1ca16e44e0b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E9C 4312 bytes
font_01_sfnt_off00006dc5.bin
58da794a282fa9d481345312c827a7d2e520aa059dc73e7100561b0e3564cc93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC5 5072 bytes
font_02_sfnt_off00007ef5.bin
f6a452122b3de7e54299d795fcdeddd1504012a8a2643e73c46fd660817bd737		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF5 12096 bytes

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