Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c83c5ca8d3f6a4d…

MALICIOUS

PDF

51.4 KB Created: 2020-07-25 02:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b7ee7e6aae00bd37fa0a42adc595ca1 SHA-1: 5fd4ee5c3d2e59ba2d60097a7c557abd75deaef7 SHA-256: 7c83c5ca8d3f6a4d71d6907d0c2d59bf35d953c7678ee9c42968485cd79bccf6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute content through a link farm. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=aneto+mountain+guide'.

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=aneto+mountain+guide
    • http://files.monstieur.com/uploads/1/3/2/6/132681928/nefobedis.pdf
    • http://files.emilyvine.com/uploads/1/3/1/3/131398242/8266881.pdf
    • http://files.springdalesva.com/uploads/1/3/1/4/131408170/sifasogot.pdf
    • http://files.robertpauljones.com/uploads/1/3/1/1/131164156/20820.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujufizolotedugogu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/jolasitukake.pdf
    • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/17749359517.pdf
    • https://cdn.shopify.com/s/files/1/0434/4378/1792/files/jefig.pdf
    • https://cdn.shopify.com/s/files/1/0431/1751/0818/files/pavigixinenaxibejupovesut.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/65786923630.pdf
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/vosojubi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4396/3555/files/fobogikexem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41078692832.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9187/7283/files/2060279369.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/92665097719.pdf
    • https://cdn.shopify.com/s/files/1/0434/2962/6013/files/78796363147.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2891/files/dopotopemiseb.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_off00008dd7.bin
4ed9f3037db5cd8f6a660d91e83b46423794e0c4aba87f64e77adc1b5ce1dd3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD7 4708 bytes
font_01_sfnt_off00009dbd.bin
03903e7a449dc366409156cdf2aeb2e8fe2f82b8eb19df69c4cc983cf46eeac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DBD 10192 bytes

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