Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a9605695c5fd4a…

MALICIOUS

PDF

45.8 KB Created: 2020-09-01 03:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b0b4bbde064d1a00ac6cad1eaac0e81 SHA-1: 42ec947d40c4b96be2c0a377377fe5cde85e686a SHA-256: d2a9605695c5fd4a1dc3ac9810a365a6f3b718ab62b588340f54685c5b129c89
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. One of these links, https://ttraff.cc/wix?keyword=senorita+caller+tune+free, is flagged as a malicious redirector. This suggests the document is designed to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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/wix?keyword=senorita+caller+tune+free
    • https://static.usrfiles.com/ugd/b8c837_fa3f79f315344e1b9542d8b04c15f966.pdf
    • https://static.usrfiles.com/ugd/086daf_6fbf4199c99945aea6e12674dc0db428.pdf
    • https://static.usrfiles.com/ugd/909b15_cd59139c98d74e6896368d0584f8c8ee.pdf
    • https://static.usrfiles.com/ugd/32acb1_5e17ed32201242d6919f6a958483b3ca.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_8d0d7b9f06de4e7fa4b08bec47c333ab.pdf
    • https://static.usrfiles.com/ugd/de60da_d5a2271b8f1746509b2b22b0e431fb82.pdf
    • https://static.usrfiles.com/ugd/79e5df_deb8ca06df934dc09d80cc6d77795b15.pdf
    • https://static.usrfiles.com/ugd/6c032c_7b7c8cda00774205826f62e0b08b83f2.pdf
    • https://static.usrfiles.com/ugd/217d68_603454d59ad842e0a30bdf9fdc1ae484.pdf
    • https://static.usrfiles.com/ugd/3e87bf_74520c5c361c436ebe866ad62bbd348a.pdf
    • https://static.usrfiles.com/ugd/b8c837_31b9de4785a74f6d8c7e70ad1ce593df.pdf
    • https://static.usrfiles.com/ugd/9b33c5_368c8fd6d1c04b1ebbda7b6d2598c20e.pdf
    • https://static.usrfiles.com/ugd/ba3095_2031620e1f7a430f82041d3c7c8238c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b10f1ca66d2d46b0a9a5e89f3e9c9169.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_ec0c93a05438484788dcd5a5711b5ed9.pdf
    • https://static.usrfiles.com/ugd/158fb9_b218527202a241c083cc9533ca128a20.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_off00005488.bin
2c4b515b02752a3f12eddd674dacd63724985a4e5729873d0d60f634527b3509		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5488 4800 bytes
font_01_sfnt_off000064e4.bin
ec0db84c6138b6cfef9869f70fcfdb5e9f895a4c3b802e862481cb48ec8e6c07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E4 15744 bytes
font_02_sfnt_off000094be.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94BE 16204 bytes

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