Malicious PDF — malware analysis report

Static analysis result for SHA-256 584ab05a79f05043…

MALICIOUS

PDF

34.5 KB Created: 2020-08-23 00:05:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 765ed659446d6b8d214a84b99d405a9c SHA-1: 16dfd4868e67c99a1ac2cc1410bdde0cf289da64 SHA-256: 584ab05a79f05043082dcbc4da86821f92080da138e0b359538e051ee1108de8
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.ru/pify?keyword=coulomb%2527+s+law+phet+lab+answers'. This suggests a phishing or social engineering attack, likely aiming to direct users to malicious content. The document body, though heavily obfuscated, contains references to the same URL and other Shopify-hosted PDFs, indicating a link farm strategy to obscure the malicious destination. No scripts were extracted, limiting the analysis of direct payload execution.

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=coulomb%2527+s+law+phet+lab+answers
    • http://files.shopmismo.com/uploads/1/3/2/6/132682929/xisudevuromuzibesivi.pdf
    • http://files.teplinfinancial.com/uploads/1/3/1/6/131636841/4b97f36867531.pdf
    • http://files.lisaglauer.com/uploads/1/3/1/4/131438453/tofax_dofoguw.pdf
    • https://cdn.shopify.com/s/files/1/0434/7471/4784/files/19344527745.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/gulajedog.pdf
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/33153074442.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/pekazolasegovugelalilab.pdf
    • https://cdn.shopify.com/s/files/1/0437/1618/2184/files/best_app_for_ipad_mini.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/grade_2_creative_writing_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/8115/4198/files/tomodulobo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/26214645281.pdf
    • https://cdn.shopify.com/s/files/1/0437/3820/2273/files/consent_to_let_letter_template_hsbc.pdf
    • https://cdn.shopify.com/s/files/1/0440/4389/4934/files/pamazun.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9659/files/bolokamegifowexejaxaso.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_off00004998.bin
2acabafd5b490351ce246c2a9cc0dd85adcb8cfdbc28e1ec366c2fddd943433c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4998 5228 bytes
font_01_sfnt_off00005b4c.bin
42022b14fef48de413b61820ceca6712b52c037362473e3f79d66cc5a49ed289		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4C 10012 bytes

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