Malicious PDF — malware analysis report

Static analysis result for SHA-256 c025d7ca202170d4…

MALICIOUS

PDF

37.6 KB Created: 2020-10-01 21:16:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 052e795413c6f51172fc8e5caefa28ae SHA-1: 34fdc0dea9504217ab20b33d9d4d0b9817d378e9 SHA-256: c025d7ca202170d4d2fc9ac31a197462151a7fc0e809242c5253230bed2296b0
128 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a link farm hosted on strikinglycdn.com, and one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL for the malicious redirector, suggesting a lure to download further malicious content. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cctraff.ru/strik?keyword=capitaes+da+areia+pdf+download
    • http://lexijexe.mountzionpbchurch.org/uploads/1/3/1/8/131856516/jujafilimulo.pdf
    • http://files.pushthenote.com/uploads/1/3/1/4/131455956/6e67367b2217.pdf
    • http://jemop.2319thestore.com/uploads/1/3/1/3/131397997/90100.pdf
    • http://timinun.lkaywatsonlpc.com/uploads/1/3/2/8/132814930/dodiwib.pdf
    • http://files.thebeautyteam.com/uploads/1/3/1/6/131606789/b200f.pdf
    • http://files.lakestclairwaterfestival.org/uploads/1/3/2/7/132712514/2c0e1d7c1.pdf
    • http://rexapagu.therevolutionhairsalon.com/uploads/1/3/1/1/131164250/wenunabifuwi-surukani-nomimosol-jugenep.pdf
    • http://files.kellyalexander.org/uploads/1/3/2/6/132681901/sovitifexexowegereb.pdf
    • http://popegafar.gtitusphotography.com/uploads/1/3/1/6/131606875/rudagovalikalobobasu.pdf
    • http://files.morganlwebster.com/uploads/1/3/2/3/132303382/a47e8.pdf
    • http://files.wrightsvillebeachrocks.com/uploads/1/3/1/4/131406966/9916027.pdf
    • https://uploads.strikinglycdn.com/files/657e7348-1792-4a19-8fac-005b55e78c8c/13674331318.pdf
    • https://uploads.strikinglycdn.com/files/a4d90cbd-a339-428c-b254-195a8e1f6118/72658175200.pdf
    • https://uploads.strikinglycdn.com/files/ff2abae3-495a-4721-835f-ace36c8b70af/46351468998.pdf
    • https://uploads.strikinglycdn.com/files/89e02f38-bc1d-4b27-8ea9-a7b869f1993c/mibuxitevozas.pdf
    • https://uploads.strikinglycdn.com/files/1ce21353-94f9-4f6b-ba7f-3a3bf3e16430/vedam.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_off000055ee.bin
f2e44164e3ecb6a87352079da0a38c32a865e1bad084ff0b4d27902a03e1a71f
pdf-font-stream PDF embedded font (sfnt) at offset 0x55EE 5032 bytes
font_01_sfnt_off00006728.bin
8b4786516f333538a1fbc89f6f77f9be3e5ef44d7e8d768435959ad5472db3f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6728 10064 bytes