Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae4a63b1a2eea8d2…

MALICIOUS

PDF

55.1 KB Created: 2020-08-07 09:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c17949be68f36575c42b31b193458810 SHA-1: 0eb5a202869ea1e99e81830d533d9a2cc577dd34 SHA-256: ae4a63b1a2eea8d2aef6a5eccb80af0d82e4ddc60aaf8e65b1c1696167d8952e
160 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but at least one redirects to a known malicious URL (ttraff.ru). The presence of a 'Visible LOLBin command execution instruction' heuristic suggests that the document may also contain embedded commands or instructions intended to be executed by system tools. The primary attack pattern involves luring the user to malicious infrastructure via these links.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=basel+2+pdf
    • http://files.redriverworkingdogs.com/uploads/1/3/1/1/131164174/1d6556a095c4065.pdf
    • http://files.christopherdavidroche.com/uploads/1/3/2/6/132695492/6139e70eed083.pdf
    • http://files.talkbusiness-online.com/uploads/1/3/1/3/131383380/2f85d7aca1c3.pdf
    • http://files.westpinevet.com/uploads/1/3/1/3/131384171/69b1d.pdf
    • http://files.dancestudio2c.com/uploads/1/3/0/9/130969308/15b080fa7.pdf
    • https://cdn.shopify.com/s/files/1/0436/2820/0096/files/printable_receipt_template.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/write-_cwmetricalarm_cmdlet_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45598155969.pdf
    • https://cdn.shopify.com/s/files/1/0430/7196/3296/files/gafaxofexibede.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/adestramento_de_ces_para_leigos.pdf
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/72083010484.pdf
    • https://cdn.shopify.com/s/files/1/0439/0790/7752/files/va_form_10_7959c.pdf
    • https://cdn.shopify.com/s/files/1/0431/5942/1092/files/35609525226.pdf
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/83187984890.pdf
    • https://cdn.shopify.com/s/files/1/0431/4074/3330/files/68830084537.pdf
    • https://cdn.shopify.com/s/files/1/0430/7035/7661/files/the_attention_economy.pdf
    • https://cdn.shopify.com/s/files/1/0434/3103/5032/files/puremipu.pdf
    • https://cdn.shopify.com/s/files/1/0451/9713/1925/files/anamika_academy_materials.pdf
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/77600203583.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/zaraxidazonofen.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_off000099d1.bin
822294c61cc4a0f35bb5d3958ad210026da8457118fbecc9533dc17aa33a7c51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99D1 5120 bytes
font_01_sfnt_off0000ab5a.bin
5047a256af893c36854bb51ebee342e1f2dfa0d434e68ffa4cb33dd404be76c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB5A 10612 bytes

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