Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8b969c11faa77d3…

MALICIOUS

PDF

49.1 KB Created: 2020-08-10 00:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b67d46d7914571c7fdbed56517614ab6 SHA-1: c9ad0a028d020bd59b0f305b89b4f7c90e44dfe9 SHA-256: c8b969c11faa77d3126938c9669bfa9b885cb669e562da76ca3d6a476ef3241d
150 Risk Score

Malware Insights

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

This PDF document contains numerous links to external resources, masquerading as financial literacy materials. The primary malicious link, https://ttraff.ru/pify?keyword=financial+literacy+skills+pdf, is identified as a redirector to malicious infrastructure. The document's structure and content strongly suggest a phishing or redirection campaign aimed at users seeking financial information. No scripts were extracted, limiting the analysis to the document's embedded links and structure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=financial+literacy+skills+pdf
    • http://files.backcountryexplorers.com/uploads/1/3/2/8/132816066/de5ea0c43bef7.pdf
    • http://files.studiothinking.org/uploads/1/3/1/4/131436981/d7f43d.pdf
    • http://files.deepgrassgraziers.com/uploads/1/3/2/6/132682819/gajofigibixetoxa.pdf
    • http://boxabix.melanomaactioncoalition.org/uploads/1/3/2/6/132681947/xibobalekipidujil.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/gewab.pdf
    • https://cdn.shopify.com/s/files/1/0437/1893/4677/files/aptitude_test_paper.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/71313340434.pdf
    • https://cdn.shopify.com/s/files/1/0430/0816/3993/files/86118490162.pdf
    • https://cdn.shopify.com/s/files/1/0431/1266/1152/files/kaufland_letak_brno.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/47612710755.pdf
    • https://cdn.shopify.com/s/files/1/0440/6280/2085/files/luvabavele.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5569/files/outdated_client_minecraft_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0431/6371/3690/files/66350516623.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_off00007c38.bin
c879c40c9000540580888ca91ad53ad04eb030cb877cf328e531157e02416962		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C38 5272 bytes
font_01_sfnt_off00008e44.bin
b23b834218f77201e33d2e1075c8f09d85940f9acb401d1d7d0ae69da79b3732		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E44 13136 bytes

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