Malicious PDF — malware analysis report

Static analysis result for SHA-256 86c92fdda6b9c207…

MALICIOUS

PDF

44.4 KB Created: 2020-07-23 03:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b88572d42d26e30c8b383135513ab8e SHA-1: 08f480bca14886b1e686c369c3d3a8adace53a07 SHA-256: 86c92fdda6b9c207ca077d91b778b3f52f52a509f66032804ed7195d1d7fddbe
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a 'PDF_MALICIOUS_REDIRECTOR_LINK' pointing to 'ttraff.com'. Another critical heuristic, 'PDF_SEO_LINK_FARM', highlights the mass of external PDF links, with 'cdn.shopify.com' being the dominant host. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of the 'ethical altruism pdf' keyword in the malicious URL suggests a lure for search engine optimization or social engineering.

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/wb?keyword=ethical%20altruism%20pdf
    • http://files.fotsga.com/uploads/1/3/0/8/130814411/155b35a1.pdf
    • http://files.jameswolverton.com/uploads/1/3/0/7/130775734/maguzog-bubirizeror-rogijinegeg-bawurod.pdf
    • http://files.literallyanythingmovies.com/uploads/1/3/0/8/130813841/pizavoru.pdf
    • http://files.jameswolverton.com/uploads/1/3/0/7/130
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/jovegene.pdf
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/wajosofumikid.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/24736283613.pdf
    • https://cdn.shopify.com/s/files/1/0428/3577/1558/files/21979308137.pdf
    • https://wovuvel596308806.files.wordpress.com/2020/07/kuxewudipef.pdf
    • https://zadevexidag.files.wordpress.com/2020/07/wijupivavilivokulomi.pdf
    • https://dadikopur.files.wordpress.com/2020/07/xedegepepeb.pdf
    • https://ladubine.files.wordpress.com/2020/06/51253893359.pdf
    • https://xupafib.files.wordpress.com/2020/06/61417469185.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/nogifetevuwafanufa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0429/9577/7699/files/73728324182.pdf
    • https://cdn.shopify.com/s/files/1/0435/6295/9006/files/jukapuzedevuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/41664868884.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/30607933039.pdf
    • https://cdn.shopify.com/s/files/1/0429/9164/8929/files/65354671290.pdf
    • https://cdn.shopify.com/s/files/1/0432/3531/1775/files/79145693424.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_off0000711a.bin
30f602738b885e1182e253872f311a5a89a26f57a1503be0ff8afed2bb2664d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x711A 4900 bytes
font_01_sfnt_off000081b9.bin
047df174d809d32fc0d3b458ede8c1e42b816d4a761200296c92c9031be53937
pdf-font-stream PDF embedded font (sfnt) at offset 0x81B9 10420 bytes