Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4baefbac9c07042…

MALICIOUS

PDF

43.2 KB Created: 2020-08-14 05:23:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9abad396eea2742d4573d43a52cf203 SHA-1: c232d0db9ce2754316fb3f1b6d97231677e59470 SHA-256: e4baefbac9c070420ff32ccc453ea5c31c819cb1aa03b1d72420efe2356db740
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=boppy+pillow+pattern+pdf', is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=boppy+pillow+pattern+pdf
    • http://files.iamkimata.com/uploads/1/3/1/6/131636990/dulurekap.pdf
    • http://gijerus.inspectnj.net/uploads/1/3/1/4/131437949/lepigululuwopa.pdf
    • http://files.rejuvenatemedical.co.uk/uploads/1/3/1/3/131379496/1130245.pdf
    • http://files.jennifersanasie.com/uploads/1/3/0/7/130738712/00e87f.pdf
    • https://cdn.shopify.com/s/files/1/0445/8535/3380/files/english_phonetics_and_phonology_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/converting_metric_measurements_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/7196/2265/files/96529157927.pdf
    • https://cdn.shopify.com/s/files/1/0429/3243/7158/files/zufopifigufabev.pdf
    • https://cdn.shopify.com/s/files/1/0437/6176/2456/files/bofazupomidavikonubidu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/fefisaj.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/alcoholismo_tesis.pdf
    • https://cdn.shopify.com/s/files/1/0433/7680/3990/files/91786392450.pdf
    • https://cdn.shopify.com/s/files/1/0436/2951/0814/files/scanshell_800nr_calibration_sheet.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_off00006bfd.bin
3a3e6a8a4ebd3bfca3a88622c463f96d171d8fca7675819017236092c4a67431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BFD 5100 bytes
font_01_sfnt_off00007d7b.bin
4f1044e35cd56b64e064357a39697758c837923df5d27a0f7d139853b7533a50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7B 10176 bytes

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