Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aed078027e2fa1a…

MALICIOUS

PDF

44.2 KB Created: 2020-08-17 04:37:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 368dc650de650ee1ae9de41bdb3617d5 SHA-1: a83fac59a66d1e4b5ecde864a82e91a3ca67ef2b SHA-256: 6aed078027e2fa1ad7a4754c5963b59e6155848868127b062f1ca536b48d9620
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution T1553.005 Mark-of-the-Web Bypass

The PDF document contains a lure for free Windows 7 activator software, which is a common social engineering tactic. It includes a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, a high-risk heuristic indicates the document instructs users to disable security software. The presence of numerous embedded links, many pointing to Shopify, suggests an attempt to obscure the malicious redirector and potentially host further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/pify?keyword=window+7+genuine+activator+software+free
    • http://xusitife.poysontee.com/uploads/1/3/2/8/132814930/lilumorevejemizalez.pdf
    • http://tegosig.rebekahsilver.com/uploads/1/3/0/8/130813528/fukiz_morud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/leadership_and_the_one_minute_manager.pdf
    • https://cdn.shopify.com/s/files/1/0441/1562/4088/files/jquery_ajax_download_file.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/mipogegopuwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/wibowevimomenepoviw.pdf
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/ruger_10_22_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/eliseu_martins.pdf
    • https://cdn.shopify.com/s/files/1/0438/5597/0454/files/adodc_connection_in_vb_6._0_with_ms_access.pdf
    • https://cdn.shopify.com/s/files/1/0433/7837/6867/files/50338886450.pdf
    • https://cdn.shopify.com/s/files/1/0428/9321/3855/files/67235410842.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e27.bin
3c692422479544d2724441685aee889932b772819d3a979d2241f80245e75cb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E27 5404 bytes
font_01_sfnt_off000080bb.bin
e3ffc638f7fc599209726cd35a4c318396257598dc0ff2ed5431b50e7bfedcd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80BB 10272 bytes

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