Malicious PDF — malware analysis report

Static analysis result for SHA-256 242022cd515cb4ff…

MALICIOUS

PDF

44.6 KB Created: 2020-08-07 13:45:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5ff303600ee0420ad347bf4915a80cf SHA-1: 93934da38c15ff2f6aa331dc8e162ad2424a6f5d SHA-256: 242022cd515cb4ffdc2a8a566c7b00cf5565158e534feffff2dc39ecf27cb826
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=business+model+generation+strategyzer+pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the presence of a malicious redirector is sufficient evidence for a phishing attack.

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=business+model+generation+strategyzer+pdf
    • http://files.soulparentingstories.com/uploads/1/3/0/8/130874324/depugiz-jolefegufejaw.pdf
    • http://files.swflaletrail.com/uploads/1/3/2/6/132682167/310f14d5.pdf
    • http://mexol.sueayers.com/uploads/1/3/1/6/131606349/322723f6849d.pdf
    • https://cdn.shopify.com/s/files/1/0440/4409/1557/files/jutufazikidejogavosoger.pdf
    • https://cdn.shopify.com/s/files/1/0435/6761/2065/files/r_xml_package.pdf
    • https://cdn.shopify.com/s/files/1/0433/6582/6719/files/1972625755.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/spider_solitaire_two_green_felt.pdf
    • https://cdn.shopify.com/s/files/1/0428/4815/7859/files/83797661857.pdf
    • https://cdn.shopify.com/s/files/1/0433/7011/9333/files/81134876091.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/90535637615.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/4708060761.pdf
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/electrician_apprentice_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/19691636334.pdf
    • https://cdn.shopify.com/s/files/1/0440/4648/3606/files/23668583476.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_off00006e16.bin
bb5e6f9a132ff068be4d30afdddb7ff47e7c5e2a1e16bf7de9ef15d34ef6aefd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E16 5560 bytes
font_01_sfnt_off000080fc.bin
79895d0ee43e00f49d69d025d34c0e0b3833177a941719ef737073105e8cb6e9
pdf-font-stream PDF embedded font (sfnt) at offset 0x80FC 10160 bytes