Malicious PDF — malware analysis report

Static analysis result for SHA-256 9160cba205dd95b0…

MALICIOUS

PDF

40.5 KB Created: 2020-09-03 02:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b8355f527e5805f46940fa6061ff565 SHA-1: 257e4a09821d747ecba686699ab073e0903491c2 SHA-256: 9160cba205dd95b0c38b59ac37f43b3b742162743e317db21f76b3abf2dae788
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a theme of 'guided media in computer networking' which is likely a lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.me/wix?keyword=guided+media+in+computer+networking
    • https://cdn.shopify.com/s/files/1/0440/5205/4181/files/kirisimosozelejutimaji.pdf
    • https://cdn.shopify.com/s/files/1/0462/7742/7349/files/31593279181.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/82093531743.pdf
    • https://cdn.shopify.com/s/files/1/0435/1354/4863/files/lepuwawetasevivasuzijusa.pdf
    • https://static.usrfiles.com/ugd/b8c837_5efa5754b4034f06a5226a533c3911f5.pdf
    • https://static.usrfiles.com/ugd/b916f4_d103699668a145d284fcf373672d25ca.pdf
    • https://static.usrfiles.com/ugd/76de1a_fb81752ce0774b51b127a8a70ce53fdc.pdf
    • https://static.usrfiles.com/ugd/40b9e6_ed7dc82f54414a888e7551a70db7488a.pdf
    • https://cdn.shopify.com/s/files/1/0431/5562/0006/files/58664185006.pdf
    • https://cdn.shopify.com/s/files/1/0432/9039/4788/files/vaterevefipize.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/kabilev.pdf
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/vupifako.pdf
    • https://cdn.shopify.com/s/files/1/0438/2988/7136/files/43396821432.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_off00006147.bin
5278fed22a066deca165c612bda5235257b96e7ffcd6fbe19f73a8dc4e049ac6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6147 5368 bytes
font_01_sfnt_off0000738f.bin
a30b622fa9bf369ec01f796dbe2af402d07e54f9bab0329c33f59a2fef56fe6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x738F 9780 bytes

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