Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d27de397bcd5935…

MALICIOUS

PDF

47.2 KB Created: 2020-07-29 10:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d1a81268fb971b377640c36a4c77529 SHA-1: 1b64ec47aefae90759e2aaac1e64ecb4b178aaf8 SHA-256: 3d27de397bcd5935baa77eaed442e2c2deebbe62b26700e96f44880cb0a67678
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on platforms like Shopify and other file-sharing sites. One of the primary links directs to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'definition of leadership and management pdf'. No scripts were extracted, but the heuristic firings strongly indicate a link farm and redirector attack pattern.

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.ru/pify?keyword=definition+of+leadership+and+management+pdf
    • http://files.t9corp.com/uploads/1/3/2/3/132302978/mabifogipinewab.pdf
    • http://files.wvangler.com/uploads/1/3/2/6/132681586/fibudatib.pdf
    • http://files.chanticleer-press.com/uploads/1/3/0/7/130775286/libowagutuk.pdf
    • http://files.summerhillbotanicals.com/uploads/1/3/1/4/131453456/5699962.pdf
    • http://files.chanticleer-press.com/uploads/1/3/0/7/1307752
    • https://cdn.shopify.com/s/files/1/0428/4927/1975/files/febejagakuxagavukam.pdf
    • https://cdn.shopify.com/s/files/1/0436/1561/7182/files/sevobarejaxipikafumivezo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/7784874478.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/18009062908.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdf
    • https://cdn.shopify.com/s/files/1/0431/7210/2308/files/xapinozikabileluvono.pdf
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/bebok.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/83653432354.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32823332632.pdf
    • https://cdn.shopify.com/s/files/1/0430/8644/6746/files/16256492395.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jikoleluvotejagumali.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/24818712267.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fimovubonivunab.pdf
    • https://cdn.shopify.com/s/files/1/0437/8171/8167/files/66547084757.pdf
    • https://cdn.shopify.com/s/files/1/0437/7837/5829/files/66735409603.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_off00007a75.bin
8ea28220e30005957ea17d865c296c6505f3e905cafe1aeb7a6154a2dc9ccf33
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A75 5244 bytes
font_01_sfnt_off00008c1c.bin
85cac71d129148329b7a4e4fb32f39bcf98116c3fab44c671f13eed5df36b8d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1C 10308 bytes