Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ff6e482f6b0d61…

MALICIOUS

PDF

41.8 KB Created: 2020-08-07 20:43:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89b8017f65a8d0802b0eb0e9464a5a66 SHA-1: 25867eb491e77905462dc18056ba3aaf437d19e7 SHA-256: 92ff6e482f6b0d61f40ae6924cb84e0f93795ca34b9a439b7d7ad95df5e9bf5b
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 external PDF files hosted on various domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the ultimate destination. The document body, though heavily obfuscated, contains text related to '2020 mlb playoff bracket printable pdf', indicating a lure to attract users to click on the 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=2020+mlb+playoff+bracket+printable+pdf
    • http://files.nativenerds.org/uploads/1/3/1/3/131384070/zatet-gewuvovelepalod.pdf
    • http://suzixif.toodarkmotorsports.com/uploads/1/3/1/3/131379803/1518452.pdf
    • http://files.blackwatervideo.com/uploads/1/3/1/8/131856877/a6847938.pdf
    • http://jegoxiw.damascushomes.us/uploads/1/3/0/9/130969742/7333057.pdf
    • https://cdn.shopify.com/s/files/1/0434/5475/9069/files/76424925894.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/70167397004.pdf
    • https://cdn.shopify.com/s/files/1/0436/8862/4283/files/56151480401.pdf
    • https://cdn.shopify.com/s/files/1/0437/0975/9640/files/allen_carr_endlich_wunschgewicht.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/73392825940.pdf
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/99676798211.pdf
    • https://cdn.shopify.com/s/files/1/0429/4203/8172/files/quimica_inorganica_ejercicios.pdf
    • https://cdn.shopify.com/s/files/1/0433/1493/8014/files/free_phonics_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/kidumesijoziraralo.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_off00006645.bin
64cd3bc34bb0b5fe23c7d91421c99745fc7f2022d0886a29a5a6f2864f0bfb6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6645 5608 bytes
font_01_sfnt_off00007947.bin
44028764703d143934972a19fafefa28b85e04a4f7f5a5fac95d9940e3c72689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7947 9736 bytes

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