Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2b67ec118a5d7cb…

MALICIOUS

PDF

47.2 KB Created: 2020-08-13 21:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bca962e658dbf5903cb746292a618d2b SHA-1: 86219e20c6a3163d7f66b1f007f42a2b3edd5d63 SHA-256: c2b67ec118a5d7cb54d36712eab0a1fc23c2cb51592f4e114ed3e5113e8fe8a0
160 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a Google form response link, which is a social engineering lure to trick users into clicking. The document body and heuristics indicate a 'Browser extension / update installation lure' which is a common method for credential theft or malware delivery. The primary malicious URL identified is https://ttraff.com/pify?keyword=google+form+responses+to+multiple+emails, which redirects to other PDF files hosted on various domains.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=google+form+responses+to+multiple+emails
    • http://pemonuxi.marcminsker.com/uploads/1/3/1/0/131070487/kenidefujewameki.pdf
    • http://files.facemasksforbusinesses.com/uploads/1/3/1/4/131437147/beseverutetobawivaxi.pdf
    • http://files.marketmovesmatt.com/uploads/1/3/0/8/130874629/nuvigure-bufagejiv.pdf
    • http://sutejin.nimatennis.com.au/uploads/1/3/1/0/131070493/370872c5367.pdf
    • http://files.christophercarpenter.net/uploads/1/3/1/0/131070602/zorulozemava.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/41773634442.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/mulagesef.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/53099926007.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/87050259234.pdf
    • https://cdn.shopify.com/s/files/1/0434/9627/6128/files/lp_asma_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4702/files/epa_608_certification_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4823/files/ayushman_bharat_offline_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/mufesudimesof.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3964/files/628773898.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006479.bin
0179fb0a1afe0a04f2b418fa13634f1755abe162bbf1ee44bdf06e54f82421c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6479 5252 bytes
font_01_sfnt_off00007651.bin
c6cc90ecfa89d0e46029d9d1bbf9bc13ff286cfdbff1bef7a59ae1272afc2d4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7651 10576 bytes
font_02_sfnt_off00009aaf.bin
52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAF 16036 bytes