Malicious PDF — malware analysis report

Static analysis result for SHA-256 388559ee83934df3…

MALICIOUS

PDF

44.6 KB Created: 2020-08-18 17:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9796d0abc2df4efef0b91b779a15d501 SHA-1: 78677b31ed49a03c2f173497c77c6e9454955f60 SHA-256: 388559ee83934df3ccf5d969d1978b20da949f10930093e2a05aed28f0cdf4d0
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/pify?keyword=centralised+procurement+vs+decentralised+procurement+pdf', points to known malicious redirector infrastructure. The presence of a link farm and a malicious redirector strongly suggests the document is intended to lure users to malicious websites, likely for phishing or malware delivery.

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.cc/pify?keyword=centralised+procurement+vs+decentralised+procurement+pdf
    • http://danogum.hattology.com/uploads/1/3/1/4/131482995/xonijikusep.pdf
    • http://files.websitetemplatesdesign.com/uploads/1/3/2/7/132710722/7026320.pdf
    • http://files.daphnesdetails.com/uploads/1/3/1/3/131398351/modipa_sefamilif_femagekivuw_xurofumolikab.pdf
    • http://files.elizabethwright.net/uploads/1/3/1/4/131483662/9037417.pdf
    • http://files.maennersymposium-schweiz.com/uploads/1/3/0/7/130740323/7060705.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5056/files/kujakijogata.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/xedagij.pdf
    • https://cdn.shopify.com/s/files/1/0434/1976/2840/files/18185055058.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/mozarojifupi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rakapadanixip.pdf
    • https://cdn.shopify.com/s/files/1/0428/1755/2543/files/fozidar.pdf
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/wugiribosigofubodi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wososopozabe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/genetic_mutation_worksheet.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_off00006f9e.bin
d184aafd3ac011b8af26da6b2f3c39ab96853c6b81315c88373a777377fc69be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F9E 5264 bytes
font_01_sfnt_off0000816b.bin
375d06e0c764bd0adc29ed10db97a969fdd09ee953e7297dc90a7266f466523e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x816B 10584 bytes

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