Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b0276aff22a073…

MALICIOUS

PDF

48.9 KB Created: 2020-08-30 20:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99c7541660bc680b0dab0f254a4ef1cc SHA-1: 3b6b1ced9641304a50707a3ff416202ccfbaee83 SHA-256: e9b0276aff22a073ef4695ed60bc02e0063ed24f35f8f27683061bf57a8a4ce3
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 of which point to a redirector service. The primary malicious link identified is 'https://ttraff.com/wix?keyword=christmas+pageant+script+traditional', which is known to lead to malicious infrastructure. The document body, though heavily obfuscated, contains this URL, suggesting it's the intended lure. 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.com/wix?keyword=christmas+pageant+script+traditional
    • https://static.usrfiles.com/ugd/b8c837_b905e840e05e4104a64b7ce3b4252619.pdf
    • https://static.usrfiles.com/ugd/ae15ca_dc89072b7ad44d558d5324687d5f49f0.pdf
    • https://static.usrfiles.com/ugd/87a178_84701a40bdec43cb81885231247824cf.pdf
    • https://static.usrfiles.com/ugd/ceb2e8_82d30785e6434e3eb7884da8122cc665.pdf
    • https://static.usrfiles.com/ugd/0789d5_0550dcbd7aa04aa7ac1613f17d99d7df.pdf
    • https://cdn.shopify.com/s/files/1/0431/0230/6468/files/nulifuwegejizukegorinik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/60470379398.pdf
    • https://cdn.shopify.com/s/files/1/0447/6325/0839/files/94545066954.pdf
    • https://cdn.shopify.com/s/files/1/0432/7905/7056/files/ethical_hacking_books_in.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/17006260766.pdf
    • https://cdn.shopify.com/s/files/1/0436/8121/8710/files/mojosisikavikutegojofizu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1350/4150/files/66661983727.pdf
    • https://cdn.shopify.com/s/files/1/0434/0898/2165/files/febotazafasiso.pdf
    • https://cdn.shopify.com/s/files/1/0431/0351/8887/files/nebaraxiwupo.pdf
    • https://static.usrfiles.com/ugd/a382ee_8bdf9a151ba44b06a112d52012784890.pdf
    • https://static.usrfiles.com/ugd/7f46b5_0c24de45ff5045e78edf86d5208a788a.pdf
    • https://static.usrfiles.com/ugd/de65f7_83d70b10587a49f9b096c0fc35380eb7.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072a7.bin
a8d26b58915695e3f05a7df014bad8ac03936dbfffc6456390ebedf6e632185c
pdf-font-stream PDF embedded font (sfnt) at offset 0x72A7 5300 bytes
font_01_sfnt_off0000847c.bin
9bd1b85f861cf6e3fa4acc5e374b89be721dba9243d435dc59603965c9b1b7a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x847C 10472 bytes
font_02_sfnt_off0000a84b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA84B 4324 bytes