Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ba32110ebb7863…

MALICIOUS

PDF

113.1 KB Created: 2020-08-04 23:41:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fc0500a7065321bfae3fad01d3251b4 SHA-1: ac9f07b843ea8d17c98de50a581954d13cc2831e SHA-256: d9ba32110ebb78638d621589054afa0c0926a559e8c8033258e85608d9169b74
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, https://ttraff.cc/pify?keyword=organelos+celulares+pdf+libro, is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious content or phishing sites.

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/pify?keyword=organelos+celulares+pdf+libro
    • http://files.alcuincollege.com/uploads/1/3/1/3/131384552/makifikepusewajilev.pdf
    • http://files.christinemottram.com/uploads/1/3/1/0/131070351/598985369b5f739.pdf
    • http://files.gabysartgallery.net/uploads/1/3/1/0/131070597/5069421.pdf
    • http://files.karaadditonphotography.com/uploads/1/3/2/8/132814791/aef79b7288.pdf
    • http://files.carringtonandfinch.com/uploads/1/3/1/3/131381612/102652f00.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/doragewotupepefe.pdf
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/nufekitadinirefopix.pdf
    • https://cdn.shopify.com/s/files/1/0433/8932/1366/files/ssh_key_permissions.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5476/files/fifukolibal.pdf
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/ratetutalajopexitaxipe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/duzotu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/2777116224.pdf
    • https://cdn.shopify.com/s/files/1/0431/2678/4157/files/olsat_practice_test_level_e.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xodowowesibaxen.pdf
    • https://cdn.shopify.com/s/files/1/0433/4757/4949/files/pedake.pdf
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/69129143282.pdf
    • https://cdn.shopify.com/s/files/1/0431/4300/4322/files/wiradofifegumosotoda.pdf
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/vifepam.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/5629661364.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_off000174f3.bin
4bb115d816cb8b59aa33de78d858b079eee27ee31bd09ec0dc7b178dd8a17cd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x174F3 5492 bytes
font_01_sfnt_off000187ac.bin
6d08c9b9317002970f5a4d5c0a5b07494a812b0a2bde910d529049822f6dc76a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x187AC 14944 bytes

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