Malicious PDF — malware analysis report

Static analysis result for SHA-256 323dce3437b6795c…

MALICIOUS

PDF

42.3 KB Created: 2020-08-20 02:28:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8339fc2efc0939f6b6cf793caef51ccb SHA-1: bfb3cec1eab89ff9bbca2a5957caa3777d6f1ae7 SHA-256: 323dce3437b6795cfe92f31e3c13f1ddc7e4ae5cf13fda7f1bc334a5e0f0d79d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=cancun+airport+map+pdf' which is presented as a 'Cancun airport map pdf'. This URL is the primary indicator of malicious intent, likely serving as a lure to redirect users to a malicious site. The PDF also contains a link farm heuristic, suggesting it's part of a larger SEO poisoning or link spam campaign.

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=cancun+airport+map+pdf
    • http://files.handtohealth.com/uploads/1/3/1/3/131383892/loxatuvefatimufuti.pdf
    • http://files.wmaacdst.org/uploads/1/3/0/7/130775795/48d7552.pdf
    • http://files.victoriacfontan.com/uploads/1/3/1/4/131453065/rununimijamulo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/12263268507.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1287/files/47036733002.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/jozasisokelule.pdf
    • https://cdn.shopify.com/s/files/1/0438/3742/3776/files/difference_between_capacitor_and_capacitance.pdf
    • https://cdn.shopify.com/s/files/1/0435/1528/1568/files/seismic_analysis_of_structures.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/bowflex_xlt_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/99489667833.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/vojolalozitexanifovifik.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/pesasovedijotemopopes.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_off0000671b.bin
7ab14991d3f0020f6ef754d4facd16905503c1da5dd4ed9083fdfb7a764aae7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671B 4996 bytes
font_01_sfnt_off000077ff.bin
683fc62b5aeef0ae4f1647b11ef92baa762ab7617ad065b609195591f2341cee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FF 10624 bytes

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