Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcae1b8040c26915…

MALICIOUS

PDF

47.6 KB Created: 2020-08-10 17:16:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ba8a76b85c212d22941b6a337bd800d SHA-1: 6372a337e1129de828a89e4e239e53efb47160c1 SHA-256: fcae1b8040c269151d63653ca928e9591d0348ee026f4e99184bdebca4bdeb55
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/pify?keyword=advanced+trauma+life+support+pdf+espa%25C3%25B1ol', is the primary indicator of this malicious activity. The document body, though heavily obfuscated, contains this URL, reinforcing the lure. The file also exhibits characteristics of a link farm, with numerous external links, further suggesting a malicious intent to redirect users.

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.com/pify?keyword=advanced+trauma+life+support+pdf+espa%25C3%25B1ol
    • http://files.codeofbehaviour.com/uploads/1/3/1/3/131383483/tapizugaliwen-sarar-tirikumelifutuv-popivuxopade.pdf
    • http://files.aerocustoms.com/uploads/1/3/1/3/131383247/8ad2f3b610b.pdf
    • http://files.fexasas.com/uploads/1/3/1/4/131437680/sobaresesasejedenix.pdf
    • https://cdn.shopify.com/s/files/1/0449/2463/3243/files/nrsv_catholic_bible.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/kilinatawozopa.pdf
    • https://cdn.shopify.com/s/files/1/0436/0480/3746/files/48505490805.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/vavabofaloravufuwudezi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/40923772292.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/rirazadobones.pdf
    • https://cdn.shopify.com/s/files/1/0431/0538/6647/files/ortopedia_maxilar_integral_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/josoxepevisisix.pdf
    • https://cdn.shopify.com/s/files/1/0434/1891/0876/files/georgia_lease_agreement.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/jujeselakat.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/76580910644.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/
    • https://cdn.shopify.com/s/files/1/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078f4.bin
75fec8852e599945bc0b36bd9f701bc64ca4b939a52f029d172035887a63cc74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F4 5560 bytes
font_01_sfnt_off00008b87.bin
b73099471212de933132db36c1e1f5ba9c894d05afb4ea6eb7e892422787a4bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B87 10424 bytes

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