Malicious PDF — malware analysis report

Static analysis result for SHA-256 e77efaac00dcadf3…

MALICIOUS

PDF

41.8 KB Created: 2020-08-01 09:29:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e0654bbf75c038a0205a05dd846ee00 SHA-1: c5ac6e2b7ffbff30502f2d636e288791119c8f72 SHA-256: e77efaac00dcadf342a54bd8fb0386c41bd7409e73ad002ceb2bdb918dc9fabb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=bell+dashboard+150'. This URL is presented within the document body, likely as a lure for the user to click. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious IOC is the redirector URL.

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=bell+dashboard+150
    • http://files.fernandoandradeart.com/uploads/1/3/1/8/131871690/2ae287c7f66.pdf
    • http://files.puppychulos.com/uploads/1/3/1/4/131454109/4015936.pdf
    • http://files.pachamama-yoga.com/uploads/1/3/1/6/131606858/keferikidi-paxabo-resupovenewixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/4706590294.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/91281626560.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/josujoxuriwenedusazov.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/41976766657.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90840236881.pdf
    • https://cdn.shopify.com/s/files/1/0429/1205/5463/files/95213124810.pdf
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/55981208064.pdf
    • https://cdn.shopify.com/s/files/1/0435/0548/3942/files/89461707212.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/wapidorezi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7682/files/selotipatizev.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/
    • https://cdn.shopify.com/s/files/1/0435/0548

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000630d.bin
a075a52901356def076617abb6bc9be416d78d321314fbb6c0fdae35b1810c2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x630D 5420 bytes
font_01_sfnt_off00007577.bin
3eb233cd15b6dd3e5fd24c2b7f82eed0c8a62f50a5a8c1ce5c882af410152a63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7577 10844 bytes

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