Malicious PDF — malware analysis report

Static analysis result for SHA-256 da171791876040ce…

MALICIOUS

PDF

58.6 KB Created: 2020-08-11 17:24:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ef53cbab841b46bf2c4285210bde243 SHA-1: c9f7a65ca806bfcca0c1ff68ebf5923b472c0133 SHA-256: da171791876040ce03763ea2a2542f66414c1d18d3157252dc70fd567cad3680
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.ru/pify?keyword=scientifically+proven+benefits+of+fasting+in+ramadan+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to the topic of fasting in Ramadan, likely as a lure to encourage clicks on the malicious links.

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=scientifically+proven+benefits+of+fasting+in+ramadan+pdf
    • http://files.birchfieldpractice.co.uk/uploads/1/3/1/1/131163632/vatij.pdf
    • http://zujomebis.charliedeltajewellery.com/uploads/1/3/1/4/131482975/pujujukenaxuwado.pdf
    • http://files.morstargar.com/uploads/1/3/2/6/132696335/puruve.pdf
    • http://files.motherherbcbd.net/uploads/1/3/0/8/130873795/1fc9457586718c8.pdf
    • http://guwelo.columbiayouthsoccerclub.com/uploads/1/3/1/4/131453870/sixewevetimone-maxidige-tibuku-merul.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/mejiwimulevusenewikebok.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/49794796032.pdf
    • https://cdn.shopify.com/s/files/1/0435/9097/5645/files/77906679104.pdf
    • https://cdn.shopify.com/s/files/1/0436/2951/0814/files/38739084181.pdf
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/57158079983.pdf
    • https://cdn.shopify.com/s/files/1/0429/1559/4393/files/20908979285.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/88308061728.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/badijevuxenajukitu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8758/5699/files/73990758849.pdf
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/merekuwes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0546/8068/files/relutegujo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20726054751.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8626/files/the_ophthalmic_assistant_9th_edition.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_off0000a5ab.bin
079025c5a61c767f4a9d98fd9460b8793f35ecffd6fa87ca68250642d23b91b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5AB 5880 bytes
font_01_sfnt_off0000b990.bin
edb697e155c04e8fe91ae170a0abf98798687945f1bc2a60026da74e9094b476
pdf-font-stream PDF embedded font (sfnt) at offset 0xB990 10268 bytes