Malicious PDF — malware analysis report

Static analysis result for SHA-256 82eb9cf704bbac8c…

MALICIOUS

PDF

73.6 KB Created: 2020-08-10 15:38:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 646c381506cf6b20f04574f9b89c7940 SHA-1: 745dd05302fcb02f712be038de52b6cd0fc27ed1 SHA-256: 82eb9cf704bbac8c165b56a0d9f467f2115e6dc9e356beeccb78f8c3e85abdfa
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=methods+of+argumentation+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. 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 content broadly. No scripts were extracted from this sample.

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=methods+of+argumentation+pdf
    • http://subokoj.seinnnanog.com/uploads/1/3/0/9/130969723/3032852.pdf
    • http://xetireje.spencerandbetty.com/uploads/1/3/0/8/130873995/firolek-dosajoku-lovufojotiser-mojepetunew.pdf
    • http://files.olares.com/uploads/1/3/1/0/131070508/1398087.pdf
    • https://cdn.shopify.com/s/files/1/0435/4388/8023/files/madakexegejulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6515/5487/files/magic_quadrant_for_application_security_testing_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/91830118049.pdf
    • https://cdn.shopify.com/s/files/1/0437/1628/0469/files/bosquejos_para_predicadores_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/93163879396.pdf
    • https://cdn.shopify.com/s/files/1/0435/0391/1076/files/reading_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdf
    • https://cdn.shopify.com/s/files/1/0431/3684/3933/files/posefi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/wiraduxadudulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/baxuvikudikutaxurokod.pdf
    • https://cdn.shopify.com/s/files/1/0437/6484/2647/files/pibefobinetufapif.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_off0000e2e6.bin
be36afbf4468724f0a7e18db7be43ae3b73866af9e3689bcc1513c5b26c2f1cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2E6 5428 bytes
font_01_sfnt_off0000f544.bin
b05e28538c5cdc8ffc11436a03d46fa4afd570d55c97b4ce1675e2e6e99892ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF544 10540 bytes

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