Malicious PDF — malware analysis report

Static analysis result for SHA-256 1feb9c82edaa0a55…

MALICIOUS

PDF

41.6 KB Created: 2020-08-11 22:59:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d2239532788a85d31ed00856b86f4f2 SHA-1: 3597657d1cfd781db5733f6363b9b096065d3736 SHA-256: 1feb9c82edaa0a5540eab31d00c65f5100c7fc9a6152f76ad7be78b1c389087d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=backhoe+loader+parts+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to lure the user to this malicious site, likely for further exploitation or phishing.

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=backhoe+loader+parts+pdf
    • http://zabaluz.kcolvininteriors.com/uploads/1/3/0/9/130969744/d95ebe.pdf
    • http://files.rebeccajoymohrlang.com/uploads/1/3/1/8/131856743/4bd759a523294b.pdf
    • http://files.nikigrewal.com/uploads/1/3/2/7/132740413/9626738.pdf
    • http://files.woodlandsfrenchies.com/uploads/1/3/1/3/131383553/buvomagedax_dopiriveluk.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9941/files/nuximifasofisuboniz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/98467897829.pdf
    • https://cdn.shopify.com/s/files/1/0434/8710/1094/files/jojalovutabupipax.pdf
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/rakurijigisev.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/6749043906.pdf
    • https://cdn.shopify.com/s/files/1/0435/9897/1038/files/nejinapexubineloze.pdf
    • https://cdn.shopify.com/s/files/1/0436/3229/6089/files/phenylalanine_deaminase_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/37333701820.pdf
    • https://cdn.shopify.com/s/files/1/0439/7809/6798/files/arvore_binaria.pdf
    • https://cdn.shopify.com/s/files/1/0438/0554/0509/files/65032039507.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/nexabekofexusapadajo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/zamefijifowowafibinus.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_off00006516.bin
268904698c5e85cfd1bf1f60b9e80451ec2efc74ac6942b8414227d50ee1a75f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6516 5356 bytes
font_01_sfnt_off0000773c.bin
a798a93d3e8d6d1724cc6abc30920961e8734631199a8f2db639b82b296a0b01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x773C 10172 bytes

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