Malicious PDF — malware analysis report

Static analysis result for SHA-256 27945e5abef8d823…

MALICIOUS

PDF

44.5 KB Created: 2020-08-06 18:28:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 802a90f80279118dea177d1b5fa6ec02 SHA-1: 3eaa1499cee8a5c9e6eb559fbc61d666bcc91564 SHA-256: 27945e5abef8d823b95ff1d506ac35fe3739c67b45cc5c4366616d45fd0d5d23
120 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO poisoning attempt. One of the primary links directs to a known malicious redirector, 'ttraff.cc', which is likely intended to lead the user to a malicious payload. The document body, though heavily obfuscated, contains the same malicious URL and other PDF links, reinforcing the lure.

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/pify?keyword=list+of+acceptable+i+9+documents+pdf
    • http://files.projectindianbeauty.com/uploads/1/3/0/7/130776757/8342940.pdf
    • http://wodilawem.getwirelessnz.com/uploads/1/3/0/8/130814058/zuwoveligedej-kababemo.pdf
    • http://zuzozex.beingwithcounsellinglondon.com/uploads/1/3/0/7/130740013/6473323.pdf
    • http://files.chefjarvisbelton.com/uploads/1/3/1/4/131437750/larudimidaguku-pupidegorituken.pdf
    • http://files.jacksonswim.com/uploads/1/3/0/7/130776504/7b71e27128b9.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/grant_cardone_closes.pdf
    • https://cdn.shopify.com/s/files/1/0435/5555/3432/files/togof.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/rsync_over_ssh.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/xapekaza.pdf
    • https://cdn.shopify.com/s/files/1/0437/1175/8491/files/nopulukefudujekerijenutis.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/mizeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/8353/0407/files/45998120448.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/rafojubav.pdf
    • https://cdn.shopify.com/s/files/1/0430/9565/4567/files/fitufalefaxoni.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7462/files/4055933071.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/52814434736.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7556/files/66840751562.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_off00006f1b.bin
89c8db1be37da82cb4aa23f5d77b94ec0ee9459a7349e91818a1fcec65449ef6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1B 5444 bytes
font_01_sfnt_off0000818a.bin
f5fa7cd52201cbbb80a7d7549897e62a1f73922bd963d4631601c9c0a3a2ccd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x818A 10428 bytes