Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf2bdeda37b2b3d…

MALICIOUS

PDF

45.6 KB Created: 2020-08-06 02:38:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9789fa3ba99ae1cbbbd61bfd1da7813a SHA-1: d5b40df347db5e86fee456699c54883687fbc51e SHA-256: ebf2bdeda37b2b3dcfa6b2edf27569f6f92f0423f367e814fb5fe05702680abc
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a high number of embedded links, many pointing to external PDF files. One critical heuristic indicates a link to known malicious redirector infrastructure at 'ttraff.com'. The document body contains garbled text but includes the URL 'https://ttraff.com/pify?keyword=aviso+de+privacidad+telcel+pdf', suggesting a lure related to privacy notices. The presence of numerous external links, including one to a malicious redirector, indicates a likely attempt to lead the user to malicious content or phishing sites.

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.com/pify?keyword=aviso+de+privacidad+telcel+pdf
    • http://files.rockinghamcountyncdems.com/uploads/1/3/1/4/131437967/9503897.pdf
    • http://files.capits-jewelry.com/uploads/1/3/0/7/130739621/vusipufanevemo.pdf
    • http://files.pvvikingfootball.com/uploads/1/3/2/3/132303238/zurazevi.pdf
    • http://files.sarahwooley.com/uploads/1/3/2/6/132681307/fenewikibukapasalu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/povozaburomugifawob.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/principles_of_biostatistics_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5562/files/taxux.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/konexolovaximowew.pdf
    • https://cdn.shopify.com/s/files/1/0435/2131/0875/files/nugiravoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/wimebinobinixetov.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/4658476069.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2854/files/jexaxirenukebip.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1687/files/autofecundacion_en_plantas.pdf
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/weladegaperuxoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jenodilibaxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2326/0058/files/que_es_epistemologia_juridica.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sakumuxapiwitisozu.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_off00006ffb.bin
7c5dd799c8922a04c767362f76864338bb0e1929f25d31e82e6d3fa1aa72d3b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFB 5196 bytes
font_01_sfnt_off000081c2.bin
c4e496ce20752d56f51d9d7745e182bb3c155b601643cb0bc1bbeaa70b2ac217
pdf-font-stream PDF embedded font (sfnt) at offset 0x81C2 11708 bytes