Malicious PDF — malware analysis report

Static analysis result for SHA-256 b595bdaab3005885…

MALICIOUS

PDF

49.6 KB Created: 2020-08-31 11:40:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b1354cf6e287b2ce89703861242e38e SHA-1: 5511e797766783e154afa53b01c622435f10ed91 SHA-256: b595bdaab3005885dfc9fd80efd33fa7dc02683a33c92e1abca6e27d42bcb99e
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=admin+logging+ark'. Additionally, it features a PDF link farm heuristic, indicating a large number of outbound links, many of which are to benign Shopify domains but one critical link is to the malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and several benign URLs, suggesting a lure to a malicious site.

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/wix?keyword=admin+logging+ark
    • https://cdn.shopify.com/s/files/1/0451/1078/8261/files/what_is_systematic_theology.pdf
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/controle_da_administrao_pblica_estratgia_concursos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/somerurunem.pdf
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/77223807081.pdf
    • https://static.usrfiles.com/ugd/d55797_93f3307a11e848bba1ba279f2348d0b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_1868644f22254e8fa3d860ac5f3c841c.pdf
    • https://static.usrfiles.com/ugd/b8c837_b89788869c5943fcbffa2295ffcc492d.pdf
    • https://static.usrfiles.com/ugd/b8c837_a1ae12a515684e9cbe0ba16862820ffa.pdf
    • https://static.usrfiles.com/ugd/81d6a4_89be81e1bada422394b907d4d7538477.pdf
    • https://static.usrfiles.com/ugd/b8c837_53ad0ceb798c438fa9f6eac2e0efc926.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d11e7ab723e474db2ac34467a97e171.pdf
    • https://cdn.shopify.com/s/files/1/0440/8734/5304/files/video_from_website_application.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2676/files/84469756006.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/kebuzeked.pdf
    • https://cdn.shopify.com/s/files/1/0457/6342/8516/files/canyon_camera_driver.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_off00007be1.bin
2b6b66f734fa3e94b9205076d02d007b15682c2076ef8ab539f6f7eaf6db437a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE1 5020 bytes
font_01_sfnt_off00008cd9.bin
2801a5bab9dcca7c343602b8fe5a95ec3c6af8e2c212026e505c13477bd43120		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD9 14196 bytes

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