Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec37f30f0523c62…

MALICIOUS

PDF

39.9 KB Created: 2020-10-16 18:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f0e47f34cc7c0afface421eba40dd405 SHA-1: fed819256f01046660f396cdbbdfdded4faf71cc SHA-256: 9ec37f30f0523c6245fe5a182027a95ccf7ea83e213ad2d097b454a2e33f6cf6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to redirector infrastructure and a link farm. The primary URL, https://ttraff.me/123?keyword=neufert+architects+data+pdf, is flagged as a malicious redirector. This suggests the document is designed to lead users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.me/123?keyword=neufert+architects+data+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f883c732e8bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373016/normal_5f88b2cd7fae1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366063/normal_5f87451ca4b9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5f881fbd30866.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_5f87780e4be63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f87a91ab34d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365642/normal_5f875c80e6c74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369631/normal_5f8835c603f45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_5f898c8c2bc41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372682/normal_5f8934170a5d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370985/normal_5f889f3a49b9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6105/1037/files/homogeneous_mixture_example_in_hindi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8646/2106/files/pleasantville_full_movie_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5247/3252/files/36791097791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9870/4546/files/pojizasosivomusewewobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/8826/8449/files/46265517172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2735/1717/files/jenifusabuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/30269953210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0298/9208/files/36437253549.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF5 5180 bytes
SHA-256: 85c92b9ff40ec88c7c2b699ab3ee7c4c08d7d8d903428c6581d0249a81076138
font_01_sfnt_off00006f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8F 10264 bytes
SHA-256: 1b5092131077ad2755bc02f5b7a81cb469f214bc60c52c759a0fdcd9eeec369f

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