Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea09320e050778a…

MALICIOUS

PDF

43.3 KB Created: 2020-08-27 22:11:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab722b8be731c8511592e372189d50a5 SHA-1: dc1cc97208e351b59b36a2e9e6e123ea537f5b65 SHA-256: 2ea09320e050778a79bf62bc0b58be796bdd9ae9ddff25db06c7c20b7cf2ccd1
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=tipos+de+investigacion+correlacional'. Additionally, it features a PDF link farm heuristic, indicating a large number of external links, with the first being 'https://cdn.shopify.com/s/files/1/0431/4975/4519/files/95202943055.pdf'. The ML classifier also flagged this PDF with high confidence. The document body, though partially corrupted, contains the same redirector URL, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/pify?keyword=tipos+de+investigacion+correlacional
    • http://files.jasminkwan.com/uploads/1/3/1/4/131453248/kubomerebamel.pdf
    • http://mewebes.csroyalty.com/uploads/1/3/2/6/132680835/17a1f94.pdf
    • http://kuxijakex.r1tiling.com/uploads/1/3/1/4/131482995/c80c7d9.pdf
    • http://dabenoli.thaddeusart.com/uploads/1/3/0/7/130738914/674a0d25e.pdf
    • http://files.spleitstrings.com/uploads/1/3/2/7/132740463/rikavavumojumes_logiximodinemi_daredolif.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/95202943055.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/algo_trading_basics.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/22186997231.pdf
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/tuvadalezuri.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/32020610097.pdf
    • https://cdn.shopify.com/s/files/1/0439/5086/6590/files/luwataneditijoxiwoku.pdf
    • https://cdn.shopify.com/s/files/1/0438/6249/1286/files/46477457632.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/43951425134.pdf
    • https://cdn.shopify.com/s/files/1/0434/8923/1000/files/antigone_sophocles_download.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_off00006184.bin
f5c64edc22311ffcc51596fb3711a3940331fa3cdd1e216b58375e2f0d929f49
pdf-font-stream PDF embedded font (sfnt) at offset 0x6184 1720 bytes
font_01_sfnt_off000069f6.bin
7daf6c8ac472118626b4227b57e29fb63ce2f8ca2c79126554c5a70f74c87d62
pdf-font-stream PDF embedded font (sfnt) at offset 0x69F6 5248 bytes
font_02_sfnt_off00007bdf.bin
bc22a2ec0997c8783b7d8133407d56eb8559b81735ed73d20c50f660a2456cb6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDF 11060 bytes