Malicious PDF — malware analysis report

Static analysis result for SHA-256 409d9f9d011df13b…

MALICIOUS

PDF

40.8 KB Created: 2020-08-30 23:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b607d134469045c2a81ec505745efc4 SHA-1: 35aa2e1691b7aad4cbe08f8be0a06f5bbb5e5b01 SHA-256: 409d9f9d011df13b8cdaff846e4468b8ed4de95a725f6b4381c1cb9f77000d09
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.com/wix?keyword=infografia+de+la+etica', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to potentially harmful content through a deceptive link farm strategy.

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=infografia+de+la+etica
    • https://static.usrfiles.com/ugd/b8c837_34572aa648de458f823d9caeefdf3df6.pdf
    • https://static.usrfiles.com/ugd/9904c2_582be7e71a5041cda93371835c697710.pdf
    • https://static.usrfiles.com/ugd/f4de5e_995da60ef3fd4cbfba7f48bfc97c6a3c.pdf
    • https://cdn.shopify.com/s/files/1/0441/2165/3400/files/38960319602.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/gilidovazamanutesum.pdf
    • https://cdn.shopify.com/s/files/1/0433/8352/1445/files/zirafatuvopabuniwudozuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/2014/7112/files/24181743907.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f625cbcf4794ec5883a050d4165a7bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ee74ab9be734382adc4f1d9a70bd5dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4f49d37fb594763bca7091127031944.pdf
    • https://static.usrfiles.com/ugd/4d6844_9c479bc83ffb4e8ca77e7eb02877bc08.pdf
    • https://static.usrfiles.com/ugd/b6edda_908b85bf11004dc4bdd3a40012aa049a.pdf
    • https://static.usrfiles.com/ugd/b8c837_f50f0876d8b649878ed9f278e1661d98.pdf
    • https://static.usrfiles.com/ugd/3f0e57_00724fdd9ee240de8582b4b3192790f7.pdf
    • https://static.usrfiles.com/ugd/e3325f_f6f216c5435749228ef38522e9f81712.pdf
    • https://static.usrfiles.com/ugd/b8c837_d0c90cec36e9447080397cc238479b82.pdf
    • https://static.usrfiles.com/ugd/b8c837_590d85f9c2764883a46befadc1e87379.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_off000058dc.bin
5853964994af370ca47b23497a50a3720daba9cd6f78bf42d121679487566473		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58DC 4948 bytes
font_01_sfnt_off000069ba.bin
1969b9fa4f1b3d6d5579d91ceb83789ead927b742701694eb3d55a42e285a28c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BA 14888 bytes

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