Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b130c6792020bd…

MALICIOUS

PDF

43.1 KB Created: 2020-08-11 14:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aea533a94165a78c41c627d394eeab17 SHA-1: 4bdfc29d1ec1b6626987442f4f6b8af5cba02b36 SHA-256: d9b130c6792020bd202eba89d0e1a9cb61031958d87aac2898474e29fcfe4c87
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that points to a redirector service. This indicates the primary goal is to redirect the user to a malicious site, 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.com/pify?keyword=libro+sagrado+budismo+pdf
    • http://files.greateragapedeliveranceminitriesinc.com/uploads/1/3/0/8/130873717/ffc8b52.pdf
    • http://resapak.pdxmusicminister.com/uploads/1/3/0/7/130776485/xakisadananejuxoluro.pdf
    • http://files.nomadwill.com/uploads/1/3/1/6/131636632/210f7c93e84.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/xaxupax.pdf
    • https://cdn.shopify.com/s/files/1/0431/4185/7448/files/18152788691.pdf
    • https://cdn.shopify.com/s/files/1/0452/6951/6449/files/bams_colleges_list_in_maharashtra.pdf
    • https://cdn.shopify.com/s/files/1/0433/6739/9575/files/list_of_all_countries_in_the_world.pdf
    • https://cdn.shopify.com/s/files/1/0436/6653/8649/files/40751660362.pdf
    • https://cdn.shopify.com/s/files/1/0436/4071/7462/files/70813924467.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/sozefilelejogufolu.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/38210714047.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/buposa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/gixezuxemawawazibupor.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/57931569953.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/15004274343.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_off00006840.bin
96953b41c1bd34239363db9e9c6ea8fbfe7650fc744aaf72e67ee9f44689f81f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6840 5408 bytes
font_01_sfnt_off00007a84.bin
655be4b6c459a6f30152e8a922770d95fda4c4311aee51b0ab79b2bb3ecc2e49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A84 10836 bytes

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