Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd7db9257cf7117…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 05:33:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d806a5565971c12691a21c581d32063 SHA-1: 33b127e05eb93e8588334e3f1b07f12189e14e2d SHA-256: 3cd7db9257cf7117b870fcf3bebd8f50e850269062baced12643de3fa5be2a15
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for PDF_SEO_LINK_FARM. One of these links, https://ttraff.cc/pify?keyword=comment+attirer+l+argent+murphy+pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain the same text as the malicious URL's keyword parameter, suggesting a lure related to financial gain. No scripts were extracted from this sample.

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=comment+attirer+l+argent+murphy+pdf
    • http://files.harujang.com/uploads/1/3/1/4/131453897/3305b.pdf
    • http://tubiva.jamiejphoto.com/uploads/1/3/2/7/132740900/vawulopenumemu.pdf
    • http://files.sharadslunchbox.com/uploads/1/3/1/8/131871643/5498373.pdf
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/balada_para_adelina_piano_notas.pdf
    • https://cdn.shopify.com/s/files/1/0438/3201/7058/files/zexubip.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/58586760865.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/99091355177.pdf
    • https://cdn.shopify.com/s/files/1/0430/7491/2410/files/82046912556.pdf
    • https://cdn.shopify.com/s/files/1/0436/1371/6643/files/wudosutunewexulajim.pdf
    • https://cdn.shopify.com/s/files/1/0433/5383/3637/files/92489227106.pdf
    • https://cdn.shopify.com/s/files/1/0437/3757/9674/files/43258924045.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/54314512836.pdf
    • https://cdn.shopify.com/s/files/1/0431/1462/7234/files/supesifogudugegi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/18976387927.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000599f.bin
db1e42cb33fc951023e791b8f81b5739f3f0cbbe763392d0492cdc665a926a86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x599F 5284 bytes
font_01_sfnt_off00006b6c.bin
1909766d182b619fc58e5798626f8a111df60f3c3d1ba4111be16650fd8fe505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6C 9868 bytes
font_02_sfnt_off00008cde.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDE 4324 bytes

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