Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5fae9b79794cf1b…

MALICIOUS

PDF

46.3 KB Created: 2020-08-04 17:54:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59b5cc5d20b0b27347d8e07a42d16b76 SHA-1: 6d6c39826d6b78160910964e8fd9d0d0fd25d056 SHA-256: a5fae9b79794cf1b6109f69fde246f153fff0c5c17931d3252a68777801341e0
120 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 link farm hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=java+swing+eclipse+tutorial+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure under the guise of providing a tutorial.

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.ru/pify?keyword=java+swing+eclipse+tutorial+pdf
    • http://files.my-mediamatters.tech/uploads/1/3/2/7/132740435/6028230.pdf
    • http://files.auroraherbs.net/uploads/1/3/1/3/131382092/4821889.pdf
    • http://files.kanelaandcompany.com/uploads/1/3/1/4/131406473/3117593.pdf
    • http://files.theinvisiblerose.com/uploads/1/3/2/7/132740965/4a12c2c28.pdf
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/89719867545.pdf
    • https://cdn.shopify.com/s/files/1/0437/3096/0549/files/83295521300.pdf
    • https://cdn.shopify.com/s/files/1/0431/4585/5137/files/52861024579.pdf
    • https://cdn.shopify.com/s/files/1/0428/2574/4547/files/dabuwexotevuxidimiwevefed.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pekazojifedabefotekufof.pdf
    • https://cdn.shopify.com/s/files/1/0437/8751/8104/files/xefamonikevubug.pdf
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/99426519843.pdf
    • https://cdn.shopify.com/s/files/1/0431/8674/9604/files/78202231824.pdf
    • https://cdn.shopify.com/s/files/1/0433/3728/5797/files/ligize.pdf
    • https://cdn.shopify.com/s/files/1/0430/2657/9610/files/18380583206.pdf
    • https://cdn.shopify.com/s/files/1/0433/8129/3221/files/52344626960.pdf
    • https://cdn.shopify.com/s/files/1/0428/4098/1670/files/wuxusilazopoko.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_off000067fe.bin
88b30d8182fa2710e55fb38ed3ff07f595da46da76b0e86f44419e5472370d88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67FE 5348 bytes
font_01_sfnt_off00007a4a.bin
06ea3cd628c7c78199fc7cbdc32e3361ee7f3008a3779460f9e5452bbc1fa030		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4A 10488 bytes
font_02_sfnt_off00009e23.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E23 4324 bytes

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