Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5efd9068a82a1f…

MALICIOUS

PDF

50.7 KB Created: 2020-08-19 15:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b38521af15e4dc8c76099266dd7f5a08 SHA-1: a17c8b62c32584c10946847681310575cdd4a047 SHA-256: 9a5efd9068a82a1f6e429908814fc5b19534ea98836572f57df41d92c2265e81
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious link, https://ttraff.cc/pify?keyword=nccn+guidelines+prostate+cancer+staging, is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=nccn+guidelines+prostate+cancer+staging
    • http://files.elizabethwestbrook.com/uploads/1/3/0/7/130776081/9717580.pdf
    • http://nabosex.arch-craft.com/uploads/1/3/0/7/130739017/6b42054bc.pdf
    • http://veligo.brokenbeautifulministries.net/uploads/1/3/1/4/131454178/lujuxa.pdf
    • http://remaw.jackielhutchings.com/uploads/1/3/1/4/131407005/9026101.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6566/files/45461668946.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/10718977669.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdf
    • https://cdn.shopify.com/s/files/1/0436/8374/1849/files/75353438677.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/norma_asme_y14_5m_1994.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/kigatiwetegura.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/tinarebimenepos.pdf
    • https://cdn.shopify.com/s/files/1/0438/7602/4475/files/gowobunutufadokazikoxopag.pdf
    • https://cdn.shopify.com/s/files/1/0431/8956/7650/files/95412896128.pdf
    • https://cdn.shopify.com/s/files/1/0435/4041/4615/files/nivazezazeput.pdf
    • https://cdn.shopify.com/s/files/1/0440/7482/7941/files/free_blender_full_crack.pdf
    • https://cdn.shopify.com/s/files/1/0434/7078/2624/files/bdo_gear_guide.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_off000088c1.bin
9343e184165b04f11ec554ed02651b76e1b00d6df23ce4e5db8de4154f693376		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C1 5212 bytes
font_01_sfnt_off00009a83.bin
31f4ccf59fd9065647625e52f9eea34477ca66dcac834b7cd156c1085d7bed52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A83 10248 bytes

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