Malicious PDF — malware analysis report

Static analysis result for SHA-256 e55455242bed87ef…

MALICIOUS

PDF

51.8 KB Created: 2020-09-05 16:42:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e38592e13fa22276cf60a9524f3a32e SHA-1: 27a378a0f9a205ee95489fe6b9036bb4837163c1 SHA-256: e55455242bed87ef709598d17c3c02ee78b614cb6966c35d99945e402b49c301
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 numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. One specific URL, https://ttraff.club/wix?keyword=luiz+carlos+bresser+pereira+pdf, was flagged as a known malicious redirector. The document body contains garbled text and embedded URLs, further supporting the malicious intent. No scripts were extracted from this sample.

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.club/wix?keyword=luiz+carlos+bresser+pereira+pdf
    • https://cdn.shopify.com/s/files/1/0439/4303/5048/files/massey_ferguson_35_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0459/6318/2247/files/17889226903.pdf
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/sorimakofapow.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/abirami_anthathi_mp4_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/lovawedel.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/blouse_designs_catalogue_download.pdf
    • https://static.usrfiles.com/ugd/430cb2_ffaac45c02ae4a3f94ec499532b1a0fe.pdf
    • https://static.usrfiles.com/ugd/b13fd1_68200f1f79df437f92ac7ae5c2ebc01f.pdf
    • https://static.usrfiles.com/ugd/11276f_95098d77009f4b8799729d2cebb52603.pdf
    • https://static.usrfiles.com/ugd/c1615c_6c96fef347864e988c88213f276225b7.pdf
    • https://static.usrfiles.com/ugd/fac845_b3ce0a7455c14dcf89df32dbdce4379d.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_off00007b6a.bin
68d6741915c4d75e38d66b936a3d90372d53008e3f85d240ff2fec4c087df0bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6A 4976 bytes
font_01_sfnt_off00008c5f.bin
dde1e8e74691828b4c9f21fc3d37bcf372679b712f50f3cedc475a8286f0298c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5F 11956 bytes
font_02_sfnt_off0000b322.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB322 4324 bytes

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