Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ca2bd212f9c695a…

MALICIOUS

PDF

48.1 KB Created: 2020-08-19 12:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8753c17a651533d49cd4197cf9c42c1b SHA-1: dd90e7d168eed8afcad3275bb7055e20da3747f0 SHA-256: 8ca2bd212f9c695a69f1fb78f482de00a7aac2412b17cf085c9db43717207699
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the primary malicious URL. The combination of these factors strongly suggests a phishing or redirection attack designed to lead users to malicious content.

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=public+policy+cycle+pdf
    • http://files.eeutah.org/uploads/1/3/1/0/131070646/2044f2120e09.pdf
    • http://files.greateventsrecording.com/uploads/1/3/1/4/131408465/finife.pdf
    • http://files.csconstructionincorporated.com/uploads/1/3/1/8/131871650/jutipujemerabadu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/calculus_2_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3625/files/galaxy_s9_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdf
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/9015465430.pdf
    • https://cdn.shopify.com/s/files/1/0434/7471/4790/files/21971504078.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/neboburitezi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/murepevi.pdf
    • https://cdn.shopify.com/s/files/1/0440/3331/0870/files/16412525259.pdf
    • https://cdn.shopify.com/s/files/1/0447/6862/4791/files/pronoun_reference_agreement_worksheet_for_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/54678070890.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mofofuledezenededur.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_off00007d3f.bin
01177e42330c7fda0bb945dae063a93fe5766082f93dde9ec3105230948af912		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D3F 4908 bytes
font_01_sfnt_off00008dfd.bin
e3ace97f60d9f98bac342cba1d82e186e152a3ad4e715948b9e2d04ae60cc769		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFD 10980 bytes

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