Malicious PDF — malware analysis report

Static analysis result for SHA-256 369ffa92bf2e0c6d…

MALICIOUS

PDF

49.7 KB Created: 2020-08-11 01:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 564bec4f2312547f5be83aa132363f56 SHA-1: 7ea0791d44926dddfbf65c83306e8c2ad67fd111 SHA-256: 369ffa92bf2e0c6d5664c03057cc182683c398a30d55ef965acece53a3b2fc66
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=abstract+vs+concrete+nouns+pdf'. It also exhibits a PDF link farm pattern, with numerous embedded links, many pointing to Shopify domains. The document body contains the same malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack pattern is a phishing attempt via a malicious link within the PDF.

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=abstract+vs+concrete+nouns+pdf
    • http://files.stellarcarevacations.com/uploads/1/3/2/6/132695543/185c368.pdf
    • http://files.fredcarley.com/uploads/1/3/0/7/130740325/maluf-vivuzabavuvaf.pdf
    • http://files.atmaanur.com/uploads/1/3/1/3/131381612/xakiguzigorunu_vilogozomikibe_puzorilino.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/23637716601.pdf
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/8222245751.pdf
    • https://cdn.shopify.com/s/files/1/0432/5277/7118/files/learn_japanese_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0437/1814/8261/files/baxuniwupopajum.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6150/files/zatixu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3151/7605/files/38632703902.pdf
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/kepugitab.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/46724904675.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5240/files/daytona_usa_2.pdf
    • https://cdn.shopify.com/s/files/1/0438/7612/2792/files/kexuzega.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/funowobuteb.pdf
    • https://cdn.shopify.com/s/files/1/0434/5538/1669/files/jasabijelunixoxaduv.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/xukapax.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/64439296577.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_off0000843a.bin
f2043fa936401aaa8c49a1c855746bc8c1823b16bc3c386624629e034699e653
pdf-font-stream PDF embedded font (sfnt) at offset 0x843A 5304 bytes
font_01_sfnt_off0000964b.bin
80df0b3bfbe5122e188eabd90e7759420b645558cbbf35b1c1a912cde6c898de
pdf-font-stream PDF embedded font (sfnt) at offset 0x964B 10372 bytes