Malicious PDF — malware analysis report

Static analysis result for SHA-256 4919cf2d0f899f74…

MALICIOUS

PDF

37.1 KB Created: 2020-08-10 23:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe3b5363e66ea512dbdda75ce9bb40ec SHA-1: eeaaea7247c9a6bbcfd108c3c9982ac1e2158335 SHA-256: 4919cf2d0f899f742238f41252e2888fd4bfe250efb7cbb20ac9184fecb0d69d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=storm+in+a+teacup+book+pdf'. The document body also contains this URL, along with numerous other URLs hosted on Shopify, suggesting a link farm or redirection scheme. The primary intent appears to be directing the user to malicious infrastructure under the guise of providing a book PDF.

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=storm+in+a+teacup+book+pdf
    • http://files.bloomfieldhillsskiteam.com/uploads/1/3/1/8/131856170/lenurozegeso.pdf
    • http://files.adonaisgoldendoodles.com/uploads/1/3/0/7/130775808/cf253.pdf
    • http://files.premierpropertysvc.com/uploads/1/3/0/9/130969352/latavenuzuwudan-lelut-bejumomipele.pdf
    • http://files.sunsetparkavenues.org/uploads/1/3/0/7/130775743/5690656.pdf
    • https://cdn.shopify.com/s/files/1/0431/0486/2375/files/90609659506.pdf
    • https://cdn.shopify.com/s/files/1/0429/4282/4611/files/vunewosanotakogivaw.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/vumusoxokapapulu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/39584637953.pdf
    • https://cdn.shopify.com/s/files/1/0428/7712/4764/files/22930149642.pdf
    • https://cdn.shopify.com/s/files/1/0438/3208/2594/files/poniwunaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2348/2535/files/assembler_des_fichiers_mac.pdf
    • https://cdn.shopify.com/s/files/1/0430/7727/1703/files/punixulomifobel.pdf
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/jozarusinifif.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/72163357961.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/budazasinopuxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/7287/8747/files/roladezasamipopan.pdf
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/56697258497.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_off00005262.bin
7942f78ce0b521112aa93ff63ead2823ebbc7dd6a73c5946e0e72fce8f56728f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5262 5396 bytes
font_01_sfnt_off00006496.bin
698e4361fda376721034fefa747c0c5e14956803d33f4bfcb1196f1d3ea6e2af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6496 10252 bytes

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