Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b145097e8a090e3…

MALICIOUS

PDF

49.4 KB Created: 2020-08-20 10:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76bb54fb61fb9a176e514bcf1bdc1a86 SHA-1: 07f96864c5398af7e5dff8a474c869a8afe4b1c9 SHA-256: 1b145097e8a090e30babc889e4a4736ab3abe096883d50c0d9ad3e8d02e1ba76
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=agenda+imprimible+2019+pdf+gratis'. This URL is presented within the document body as a lure for a free printable agenda. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify. The primary malicious URL is the most critical IOC.

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=agenda+imprimible+2019+pdf+gratis
    • http://tedomobug.fdimmigration.com/uploads/1/3/2/7/132712011/xalagozaso_rifosetuzodilej.pdf
    • https://cdn.shopify.com/s/files/1/0434/0813/0200/files/printable_bubble_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/15727489284.pdf
    • https://cdn.shopify.com/s/files/1/0431/1708/4833/files/ahrc_form_3924.pdf
    • https://cdn.shopify.com/s/files/1/0438/1065/2317/files/19870320160.pdf
    • https://cdn.shopify.com/s/files/1/0431/0928/6050/files/78773610803.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24501063531.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/76914834932.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/sazumosowarizi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/26716137509.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_off00006963.bin
1377c06ff53f3d01b579b00e56752b45ebade8e8f3e7467dbde717459654a346		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6963 5972 bytes
font_01_sfnt_off00007d94.bin
cb7c362d5647e6316ce8642d31301332337f47cf66de2af7fb54bb8231414689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D94 10748 bytes
font_02_sfnt_off0000a272.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA272 16312 bytes

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