Malicious PDF — malware analysis report

Static analysis result for SHA-256 c401f1010311347d…

MALICIOUS

PDF

46.3 KB Created: 2020-07-15 04:58:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00624a158fd71dca45d041da0e195759 SHA-1: f3ccfd8164f764672ba0131b1f46d8204aa498cd SHA-256: c401f1010311347dd58d415de2de6dc226b6741c724130c8c22bbfdab05b63b9
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous external links, 30 of which are embedded. One of these links, https://ttraff.com/wb?keyword=fatherland%20novel%20pdf, is identified as a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The document body appears to be largely corrupted or obfuscated, preventing a deeper analysis of its content or intent beyond the link farm and redirector.

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.com/wb?keyword=fatherland%20novel%20pdf
    • http://files.howsafeisourcare.com/uploads/1/3/0/7/130776526/a2c11aaed2b22.pdf
    • http://files.rachelbecquer.com/uploads/1/3/2/3/132303359/taxiriveso.pdf
    • http://files.thejuicingstation.com/uploads/1/3/2/3/132302732/3f420da67.pdf
    • http://files.spinecarechiropractic.net/uploads/1/3/1/3/131384018/30437.pdf
    • https://cdn.shopify.com/s/files/1/0428/8253/1481/files/pixorigixexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/masogofedubilajer.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/magobusiriwolozun.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/kazagalewemuvideka.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/fexonekoluboguzupolotix.pdf
    • https://fopumetuleg.files.wordpress.com/2020/07/laromuk.pdf
    • https://wuzupezazasa.files.wordpress.com/2020/07/sisaxodagagivapezenaku.pdf
    • https://lirizutetev.files.wordpress.com/2020/07/tizeraturo.pdf
    • https://vefejavu.files.wordpress.com/2020/07/sigux.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/jovefewogexob.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/22859148815.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/belukesir.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3207/files/59743324425.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/41397276444.pdf
    • https://cdn.shopify.com/s/files/1/0428/1715/9335/files/57962513885.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88406012193.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_off000079b9.bin
7ae049809c14935b8efcf92ceb1d4e658079e7f23463e00854c7da1010f3a9dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x79B9 4704 bytes
font_01_sfnt_off000089b5.bin
930122c42ce16e04f3791789a55a513477520d132b0cec40381a1a4e8111718e
pdf-font-stream PDF embedded font (sfnt) at offset 0x89B5 10092 bytes