Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f388ac67355769…

MALICIOUS

PDF

43.1 KB Created: 2020-08-09 18:10:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d58649f05bf75190136237292e7bbba SHA-1: 493b54bb00f84b015e0d380673430f5819431eb3 SHA-256: 57f388ac67355769b927a78d358ae28d7dbd528796b10ed01ac6438e367c961f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the URL https://ttraff.ru/pify?keyword=solve+axis+cube+pdf is part of a known malicious infrastructure. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content. No scripts were extracted from this sample, but the embedded links are sufficient to indicate a malicious redirection attempt.

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=solve+axis+cube+pdf
    • http://files.femaesthetic.com/uploads/1/3/1/1/131163590/152995.pdf
    • http://nobimow.braverybox.com/uploads/1/3/0/8/130813528/jipikipofadaj_xajefarurize.pdf
    • http://lewupo.godfrey-lee.org/uploads/1/3/2/7/132740214/4060282.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/2458086073.pdf
    • https://cdn.shopify.com/s/files/1/0434/5344/8358/files/senazopasunakon.pdf
    • https://cdn.shopify.com/s/files/1/0434/5154/7800/files/93267579200.pdf
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/robinhood_trading_api.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0433/1615/0427/files/zugawijitisiduvidax.pdf
    • https://cdn.shopify.com/s/files/1/0433/8555/3061/files/22300183577.pdf
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/dugufid.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9766/files/36356799488.pdf
    • https://cdn.shopify.com/s/files/1/0439/4971/9720/files/residential_design_using_autodesk_revit_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/remove_xbox_gaming_overlay_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0436/5336/5910/files/votiven.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_off00006a76.bin
8caba3efae011d5450ee82d9d5ac2f531f341d5ef310f26ddf559841a62e9427		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A76 5424 bytes
font_01_sfnt_off00007d01.bin
f9724203213baa76b6e93521f68ad26ada61fbd50fd07387bde9e6da10fbfeed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D01 10192 bytes

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