Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced3d3033f904fdd…

MALICIOUS

PDF

39.9 KB Created: 2020-08-31 01:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 681d5a16e7c86ba47e6b49da6e15855e SHA-1: d90b3664e1e47d2d84c427139c10d5f8c4042a80 SHA-256: ced3d3033f904fddf7872acbe8b871a2c9401adf6ab10ff7b2b35fbb91c325ae
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL and numerous other links to external PDF files, indicating a link farm strategy. The primary intent appears to be luring the user to the malicious redirector.

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.ru/wix?keyword=good+superhrdina+name+generator
    • https://static.usrfiles.com/ugd/b8c837_896367473ce44bd59dd3671ef063cd83.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a39c6296bda4a19bf40b2d4a636c05f.pdf
    • https://static.usrfiles.com/ugd/b8c837_849a8febcf734a0292e4c09faf8f00b1.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/56275840738.pdf
    • https://static.usrfiles.com/ugd/b8c837_89ba8acef18a416eab540a220f16fe61.pdf
    • https://static.usrfiles.com/ugd/89064d_ce145dd3cfe84eb2ad01e69df43dbba9.pdf
    • https://static.usrfiles.com/ugd/217d68_5a19ba3e97734b0eab9b9c560f1c9b58.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fc8daabb3e348a482a82c51831bc10a.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6066/files/jeref.pdf
    • https://cdn.shopify.com/s/files/1/0431/8173/6096/files/40834972373.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/raxuwuzaretir.pdf
    • https://cdn.shopify.com/s/files/1/0433/9616/9886/files/sujupilomejakewukedeke.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_off00005ebc.bin
abfc40b3b430fea67e691c517c31928cf3b367457ec5580b8ecbd423d0904eb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBC 5372 bytes
font_01_sfnt_off000070dc.bin
967ca28b1588f48ce4fa2d8d21f595600d747748f85fb9cda9ed54fc63c91146		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DC 10080 bytes

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