Malicious PDF — malware analysis report

Static analysis result for SHA-256 22cb7b470bf4ac57…

MALICIOUS

PDF

51.3 KB Created: 2020-07-23 04:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85d4454d18a3b7093cb7759d40d6fa11 SHA-1: 4112d14317e2653db773c340d18a67d8daac27a3 SHA-256: 22cb7b470bf4ac57d03f63ad71b1c15b4117579ee7dfd395de7263303f8e8b06
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. One of these links, ttraff.cc, is flagged as a malicious redirector. The document body is heavily obfuscated and appears to be junk data, suggesting the primary purpose is to host these links rather than convey information.

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/wb?keyword=testicular%20torsion%20management%20pdf
    • http://files.center-church.org/uploads/1/3/1/4/131483025/rubegajote.pdf
    • http://files.rossdillon.com/uploads/1/3/1/8/131871994/voxelorujavonu.pdf
    • http://files.taverhamdaycentre.org.uk/uploads/1/3/1/4/131408913/6a5f1.pdf
    • http://files.livingwellwholefoods.ca/uploads/1/3/1/1/131164024/6331329.pdf
    • http://files.tiffanywitownhall.com/uploads/1/3/1/1/131163833/vitexox_xukozeperapu_norow.pdf
    • http://files.taverhamdaycentre.org.uk/uploads/1
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/wugejepawevogofes.pdf
    • https://cdn.shopify.com/s/files/1/0432/1394/7041/files/4453887610.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/11591534168.pdf
    • https://cdn.shopify.com/s/files/1/0430/0819/6767/files/wigesagorebujivi.pdf
    • https://torugax.files.wordpress.com/2020/06/70793827928.pdf
    • https://ditilepikap.files.wordpress.com/2020/06/xijabedozewasavekul.pdf
    • https://wilewivim.files.wordpress.com/2020/07/58138217830.pdf
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/sojudigajowemuredumex.pdf
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/zusuwiwofuzavu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/boruzizurano.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/37903434033.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/48227605995.pdf
    • https://cdn.shopify.com/s/files/1/0432/5516/9182/files/35539693197.pdf
    • https://cdn.shopify.com/s/files/1/0430/6341/0845/files/sixarapedujegadunejavuro.pdf
    • https://cdn.shopify.com/s/files/1/0440/1607/4902/files/zivekugotavilixaliku.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_off00008a7c.bin
af42309b27251884654cf55bbff847b07c393efd2293d0bbafef023ca6b76c5e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A7C 5304 bytes
font_01_sfnt_off00009c65.bin
4cfdf7c7238dcb178c4b13c71856f49f431bd5533ea5942057c94d9ce43fee22
pdf-font-stream PDF embedded font (sfnt) at offset 0x9C65 10420 bytes