Malicious PDF — malware analysis report

Static analysis result for SHA-256 b33e6c34009bd226…

MALICIOUS

PDF

53.1 KB Created: 2020-08-01 21:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42ee551b3b65039d8384958cbf34ee60 SHA-1: 61abdb762a52b41c7cb594c1fce678393fd477ad SHA-256: b33e6c34009bd226a7d2effcb20f25498fc2081325aaa3bdc481b14ae1206279
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, https://ttraff.ru/pify?keyword=python+write+list+to+csv, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. The presence of a link farm heuristic further supports this attack pattern.

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.ru/pify?keyword=python+write+list+to+csv
    • http://files.sebandmili.com/uploads/1/3/1/4/131408103/murafikezaxumaf-tabekuwaromava-tejino-vivivege.pdf
    • http://files.yez.dk/uploads/1/3/1/1/131164047/4386632.pdf
    • http://files.eat-your-veggies.com/uploads/1/3/2/6/132695719/mewafejadixejegebixa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/terodosim.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0435/files/34875862983.pdf
    • https://cdn.shopify.com/s/files/1/0436/1460/1378/files/84946244187.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/1634207182.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/80333301442.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/39891026287.pdf
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/46725969778.pdf
    • https://cdn.shopify.com/s/files/1/0430/4060/4314/files/96407860155.pdf
    • https://cdn.shopify.com/s/files/1/0440/0958/6853/files/pegolib.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_off0000859b.bin
b93210c1115ad64029b7ddd2f75ed973b8773dd0eaf0d15a8d0e4cd12b2867e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x859B 4720 bytes
font_01_sfnt_off000095a6.bin
b2182f644e767e48b24b197348c2bfd80dcd3f043a90cf01d1add062e2f41afa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95A6 10596 bytes
font_02_sfnt_off0000b9ce.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9CE 4324 bytes

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