Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb725c9b15ea158a…

MALICIOUS

PDF

39.9 KB Created: 2020-08-30 08:11:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7fd03bac3cdc3b6526848908dc96a62 SHA-1: de07e5ff72c84c030f7d815e5961afe755a4a3b1 SHA-256: eb725c9b15ea158a3791f0cf1453d0e4ae04ea3c8db467565239ed07ed5adb07
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector at 'https://ttraff.cc/wix?keyword=st+augustine+prayer+book'. The document body, though heavily obfuscated, contains this malicious URL and numerous other links hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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/wix?keyword=st+augustine+prayer+book
    • https://cdn.shopify.com/s/files/1/0433/7578/8182/files/65779397324.pdf
    • https://cdn.shopify.com/s/files/1/0432/8197/3403/files/letter_of_authorized_signatory_for_gst_format.pdf
    • https://cdn.shopify.com/s/files/1/0452/5486/9154/files/cessna_172m_poh.pdf
    • https://cdn.shopify.com/s/files/1/0451/4267/1513/files/44273413490.pdf
    • https://cdn.shopify.com/s/files/1/0436/1024/3230/files/apache_spark_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/8229/3151/files/69160640361.pdf
    • https://cdn.shopify.com/s/files/1/0433/6146/8567/files/autopsias_de_mujeres_bonitas_de_face.pdf
    • https://cdn.shopify.com/s/files/1/0453/1814/4155/files/36286322638.pdf
    • https://cdn.shopify.com/s/files/1/0434/1350/4150/files/wiwedewavox.pdf
    • https://static.usrfiles.com/ugd/b8c837_05f556faa2e44eb1b0ffad865cd588e1.pdf
    • https://static.usrfiles.com/ugd/4c76bf_e6c2b9f507d14c308f3174515e1dadf3.pdf
    • https://static.usrfiles.com/ugd/b8c837_6184eb3acc454c0e9bcb142be6dd3251.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_cc1dca339e7742b5b8b0b14c257f1051.pdf
    • https://static.usrfiles.com/ugd/6846fe_12f05b25394f45378e1c9080b7640ce1.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_off00005dbc.bin
c2fe7410732a2dde4509db60af0fb4df8ec2e288214d0cb2c9a75d0c08e908fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DBC 5364 bytes
font_01_sfnt_off00007008.bin
7a0c79638e11870fd050169b4fba00160aa7cf0fa95b96afc5dcbb1d9043eb81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7008 10192 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.