Malicious PDF — malware analysis report

Static analysis result for SHA-256 25763fe1fa430942…

MALICIOUS

PDF

59.4 KB Created: 2020-09-01 19:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44b4c36e93e7a9285c6a044388677bc1 SHA-1: ed5c039b37cedc74557cc58c5c5ef636a47e1a67 SHA-256: 25763fe1fa43094236e0a6f52a6080683cbdc1a1f59c3d7333fb17903401070b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=beats++hip+hop+free'. This URL is presented within the document body, suggesting a social engineering lure to entice users to click. The file also contains a large number of embedded links, identified as a PDF link farm, further supporting the malicious intent of directing users to external, potentially harmful, sites.

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/wix?keyword=beats++hip+hop+free
    • https://static.usrfiles.com/ugd/24853a_2ea6a02047c74dc9bccf2a82895317d8.pdf
    • https://static.usrfiles.com/ugd/b4609a_b25a1eb722494933a7bcd081acadde78.pdf
    • https://static.usrfiles.com/ugd/b8c837_410ac11a24bc4a97b1c6fbf94b111d5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e025d2f578b448c692e7da89d6058c43.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_531e9f58454a42848aec62f29e2d0a5e.pdf
    • https://static.usrfiles.com/ugd/b8c837_337896b70c954961bb4fec53f7b53413.pdf
    • https://static.usrfiles.com/ugd/74e905_86e4efb11b6244b698b9fad3435efca5.pdf
    • https://cdn.shopify.com/s/files/1/0429/6232/1567/files/fiber_optic_cable_types.pdf
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/xojilabadajavefawone.pdf
    • https://cdn.shopify.com/s/files/1/0440/4045/4294/files/6810488364.pdf
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/88414570476.pdf
    • https://cdn.shopify.com/s/files/1/0430/5128/6690/files/jusefomuneja.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/
    • https://static.usrfiles.com/ugd/b8c837_e025d2f578b448c692e

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000acbe.bin
1bfd37edb853ce396eef3f145637bb084deaf14c8fb8bccaa76054dacfa85fdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xACBE 5008 bytes
font_01_sfnt_off0000bdc1.bin
d112c2108235dbb59d50c9a829ab627a38a3bf70f1c51db0ab6c2472fba2c4ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDC1 10336 bytes

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