Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca16ae9346e560a…

MALICIOUS

PDF

32.0 KB Created: 2020-08-15 16:47:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f8a59076cb73a6d8f265acaebcd7e0d SHA-1: 8c1d9d0865977abdae5d3054dc8de12f1639cc27 SHA-256: 4ca16ae9346e560aa622f9b7eb60887ecfc2d19b2aef9a4de70a172c52e77477
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to redirect users to malicious sites. One such link, https://ttraff.cc/pify?keyword=kadita+build+guide, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other links hosted on cdn.shopify.com, suggesting a link farm designed to distribute malicious content. No scripts were extracted, and the primary attack vector appears to be the exploitation of user trust through malicious links.

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=kadita+build+guide
    • http://files.ecuadorforestofclouds.org/uploads/1/3/0/7/130739120/a6f1d3ed833.pdf
    • http://files.abnormalhunter.com/uploads/1/3/1/0/131069934/3672325.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigazisamakolomomabixefox.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/fifoxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5589/6983/files/91428856532.pdf
    • https://cdn.shopify.com/s/files/1/0434/4633/7703/files/naxulejotagekozawojotomow.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/91782401644.pdf
    • https://cdn.shopify.com/s/files/1/0437/8394/6397/files/13049478423.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/11564724591.pdf
    • https://cdn.shopify.com/s/files/1/0437/0857/9993/files/5337339429.pdf
    • https://cdn.shopify.com/s/files/1/0432/2803/7287/files/2894978301.pdf
    • https://cdn.shopify.com/s/files/1/0440/2901/8262/files/53825608477.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_off0000447e.bin
7e460e47d80f6443d0cd1a3eea4e8b1798bc605dbb6cdb4ece5a2890640f4557		 pdf-font-stream PDF embedded font (sfnt) at offset 0x447E 4828 bytes
font_01_sfnt_off000054fe.bin
0c57aeaca6188a9a615021d917f162f45130dcb1fa02e7555319703bfcfb8548		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54FE 9100 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.