Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0172cefebc1b231…

MALICIOUS

PDF

52.9 KB Created: 2020-08-31 17:51:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cc561b0a8a690b0c331b83865dc0dd8 SHA-1: cb9f1457426c7e4a4d7d87a2527246054b0633ce SHA-256: c0172cefebc1b2319f902a846153516e3e5a89eb2c13b2e04027f9e814fb2045
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to 'ttraff.ru'. This URL is flagged as a malicious redirector, suggesting the document's primary purpose is to lure users to a malicious site. The document body contains garbled text but includes the malicious URL and a benign-looking PDF link, indicating a deceptive lure. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or malware delivery attempt.

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/wix?keyword=foursquare+restaurant+guide
    • https://cdn.shopify.com/s/files/1/0434/8418/4728/files/dabixejogewajavusifapa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/3209262399.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7423/files/49694942240.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/11643284743.pdf
    • https://cdn.shopify.com/s/files/1/0433/7886/8387/files/liwufozasibofu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/american_gods_gaiman.pdf
    • https://cdn.shopify.com/s/files/1/0429/9191/1066/files/viwegolufutewojaziwoxex.pdf
    • https://cdn.shopify.com/s/files/1/0431/8307/9592/files/machine_breakdown_report_letter.pdf
    • https://cdn.shopify.com/s/files/1/0435/1796/8543/files/38245657183.pdf
    • https://cdn.shopify.com/s/files/1/0439/7488/5534/files/zupawopusulomur.pdf
    • https://static.usrfiles.com/ugd/516574_243e13ec0bf0471c94f84b392f896c07.pdf
    • https://static.usrfiles.com/ugd/d902bb_0974e2aea6cf4f5887c63002c65607eb.pdf
    • https://static.usrfiles.com/ugd/97634b_45ee0350ceb747d2b2e6b72203571f88.pdf
    • https://static.usrfiles.com/ugd/a107db_3dad08c184544536aee5e0c08dd60221.pdf
    • https://static.usrfiles.com/ugd/83b1b3_7fbb80df10d94c569c369694b4eecdb4.pdf
    • https://static.usrfiles.com/ugd/70c1f8_241e3d321465495cac1e9b38c5935b4d.pdf
    • https://static.usrfiles.com/ugd/b8c837_24929345fbb940dbb2dee78f07c4ccf0.pdf
    • https://static.usrfiles.com/ugd/12f4eb_5d6b5a160f9543cb8f47f8ad590c583e.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bd9.bin
edf517a561ed5132c6c1d5718ac6ff9d870a00e6f43a91762fd168a2279cca75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD9 6440 bytes
font_01_sfnt_off00007bcf.bin
f1127ce62fbfd30c1bcbb5fb7a3250f4e3fe932582607fb94f41f95398263b58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCF 5044 bytes
font_02_sfnt_off00008cfb.bin
7f6bf1ced3d56ca24d3d27fb8d8d8a552e63640b89796aa9279c56f2eaebbf82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFB 10560 bytes
font_03_sfnt_off0000b10a.bin
149cab45689013e99d1aa520d2e5234663aa5d8577b6aae5e423b5d60aeda4c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB10A 16036 bytes

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