Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2e73366eb3e2f9…

MALICIOUS

PDF

43.4 KB Created: 2020-08-22 06:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a06a1fc1e5c7c99a0955c37d73934f63 SHA-1: fa180e44b6629049d7e765f03e9e93737c58c4a2 SHA-256: 7f2e73366eb3e2f97b5897c240f373b92d485f99f3abfb2c8fd9e0e4df6aed14
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded external links, many pointing to redirector infrastructure. The document body contains garbled text but includes the URL 'https://ttraff.ru/pify?keyword=forma+de+contagio+da+oxiurose', which is also flagged as a malicious redirector. The presence of numerous links suggests an attempt to either distribute malware or engage in SEO manipulation for malicious purposes.

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.ru/pify?keyword=forma+de+contagio+da+oxiurose
    • http://files.womenartistsreaction.com/uploads/1/3/1/4/131411199/77ac8be7cafe5.pdf
    • http://gokegufuv.europeanrelocationservices.co.uk/uploads/1/3/0/7/130740596/wepugazaxo.pdf
    • http://files.inconcretedesign.com/uploads/1/3/0/7/130775506/sarewumasen_jugazema.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1913/files/community_acquired_pneumonia_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/dojafizodumalazikufo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8695/files/55382219263.pdf
    • https://cdn.shopify.com/s/files/1/0430/2798/8634/files/59564268858.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mitev.pdf
    • https://cdn.shopify.com/s/files/1/0432/3491/8558/files/sepewuvonulesizur.pdf
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/kanonoxepakamegupof.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/temuzuxiliposipokufup.pdf
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/effective_java_github.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_off00006bf2.bin
1505609c465fe70b6e01c66260804f077f355112cc617c3c8aece0054af268e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF2 5252 bytes
font_01_sfnt_off00007db9.bin
4cbe5d1b544a6031b3c9f8f98ab0c1479a2b9b8c0acad7bfbff6f41b097cfb57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DB9 10904 bytes

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