Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebc6978585261af1…

MALICIOUS

PDF

87.4 KB Created: 2020-08-13 15:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40aaea0572018767df5f6045d1dad47b SHA-1: 916b06e08b40dbdb68db7a0cdf1d443944f7b1b3 SHA-256: ebc6978585261af174490900c47a8ad417d8ad96041cab9abc718a7c174b6696
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a high number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, https://ttraff.ru/pify?keyword=vergilius+aeneis+pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains a reference to this URL, suggesting the primary intent is to redirect users to malicious infrastructure. 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.ru/pify?keyword=vergilius+aeneis+pdf
    • http://files.emilycavanaghauthor.com/uploads/1/3/2/6/132680808/6793363.pdf
    • http://fedefo.bluestarjumpers.com/uploads/1/3/1/4/131453109/c300ec9981d40.pdf
    • http://files.patcolburn.com/uploads/1/3/1/4/131406258/xijajojoborivi_ruteza.pdf
    • http://files.suemediaproductions.com/uploads/1/3/1/4/131482959/96ae9ac1.pdf
    • https://cdn.shopify.com/s/files/1/0430/4125/9671/files/chemical_sensors_and_biosensors_fundamentals_and_applications_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7269/files/zavamakof.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/64433826291.pdf
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/tazusezatekokabesebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/xedumogipo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7510/9013/files/kujoke.pdf
    • https://cdn.shopify.com/s/files/1/0428/9436/0735/files/1000_canciones_y_acordes_de_guitarra_gratis_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0437/6756/2394/files/activepresenter_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/fojatajafij.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/6206078886.pdf
    • https://cdn.shopify.com/s/files/1/0434/4463/3750/files/wow_f2p_guide_2017.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_off00011041.bin
82634bf82b66bfe9acfa646b5ad42c35f1266685a43e211a6191b78f934c8eb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11041 5176 bytes
font_01_sfnt_off000121ee.bin
8375e1495771bc751641fb0b476ee27d960a99bef56acd1833a077155ffe1c1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121EE 14440 bytes

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