Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebac5ca5b7554cd7…

MALICIOUS

PDF

35.2 KB Created: 2020-08-19 04:15:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b526a463a9d740fc66f5be840a5afd70 SHA-1: a691ee1f89cec872d98017f3904c25fea2c660e9 SHA-256: ebac5ca5b7554cd7e3b2d8b14845ed324acfcceba1818a571f8b98758e9fc73c
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, characteristic of a link farm. One of these links, https://ttraff.cc/pify?keyword=android+auto+honda+accord+2006, is identified as a malicious redirector. This suggests the document is designed to lure users to malicious sites, potentially for phishing or malware distribution.

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.cc/pify?keyword=android+auto+honda+accord+2006
    • http://files.florianmayneris.ca/uploads/1/3/2/8/132814220/judavi.pdf
    • http://files.amanda-g.net/uploads/1/3/1/3/131383541/wapebevomarate_xudusobizabo_gobevo_wamitugul.pdf
    • http://files.gwinnettrose.org/uploads/1/3/0/7/130740077/fukus.pdf
    • http://xepiser.urbansoundstudio.com/uploads/1/3/1/0/131070786/4c6a0ab.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/53137525316.pdf
    • https://cdn.shopify.com/s/files/1/0431/9503/9905/files/cdc_group_annual_report_2019.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdf
    • https://cdn.shopify.com/s/files/1/0434/7107/7542/files/64758988190.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0167/files/biomechanics_of_sport_and_exercise_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/3401/6924/files/nomenawojuwarefawuparifim.pdf
    • https://cdn.shopify.com/s/files/1/0437/6104/1559/files/27417795359.pdf
    • https://cdn.shopify.com/s/files/1/0437/2722/4986/files/homogeneous_differential_equation_solution.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3206/files/70164798981.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_off00004ccc.bin
ac6a0f7c58b1f7bc5f931c027f8c9c8e9a183f4dfbf228ac21d40a05d58873d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CCC 5236 bytes
font_01_sfnt_off00005e84.bin
dd307c15ed53419c13bad4d9c7b177c3dafe7df5a5ff87394ce1413790acfe49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E84 9880 bytes

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