Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6f532df1c4eabfa…

MALICIOUS

PDF

47.6 KB Created: 2020-07-30 21:18:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 400fec0501e99d79819df25105d575f3 SHA-1: 29a51ac2f728a26357bb9905e72c8306e275fe36 SHA-256: e6f532df1c4eabfa7d4aabb4df65369e9c72c4064160e2729c1a4db8a88384cf
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ajcc+breast+cancer+staging+pdf'. Additionally, it features a PDF link farm heuristic, indicating a large number of embedded links, many hosted on Shopify. The document body is heavily obfuscated, but the presence of these links suggests a lure to external malicious content. No scripts were extracted from this sample.

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=ajcc+breast+cancer+staging+pdf
    • http://files.tristanvick.com/uploads/1/3/0/7/130740173/07a05b36187dc.pdf
    • http://files.rachelcookcopywriter.com/uploads/1/3/1/4/131454109/8109267.pdf
    • http://files.mataochoa.com/uploads/1/3/0/8/130814297/67b66.pdf
    • http://files.napafermentation.com/uploads/1/3/1/4/131406811/begagidafi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1958/3133/files/gevigexikodaxiteb.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/tositemokitevik.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5958/files/xoxuxexuvuzikonevifore.pdf
    • https://cdn.shopify.com/s/files/1/0431/7986/8309/files/26529002841.pdf
    • https://cdn.shopify.com/s/files/1/0430/4096/4759/files/72541458831.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/23327930580.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/bonetupemeronenibuluvagi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6952/files/fonanutenunudotagolanawu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1636/3927/files/21519700405.pdf
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/vedotixofetexol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0335/5034/files/39544904186.pdf
    • https://cdn.shopify.com/s/files/1/0429/2735/8115/files/vuvuvikilatumamejojotire.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rerisorajomowuba.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_off00007b96.bin
0942959c2ce7909de474c16496780d0b20550280087fbdc9d0e11a52a59a1dfc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B96 5172 bytes
font_01_sfnt_off00008d32.bin
62e52ce977bc1f12fc88076d29728789c13a68d697ede4996515c26a3302a40b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D32 10508 bytes