Malicious PDF — malware analysis report

Static analysis result for SHA-256 10572c9d87732256…

MALICIOUS

PDF

35.7 KB Created: 2020-08-10 13:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a163bd5734b5831ae4f87b3bd654b852 SHA-1: 5c09a816085e1802ed23830575dcc996d9f2fde8 SHA-256: 10572c9d87732256a277d8a2e3deec984675544732ee3e6719d01ac48e87465a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to external resources. One prominent link redirects to 'ttraff.ru', identified as malicious redirector infrastructure. The document body, though partially obfuscated, contains text related to 'case study research design and methods yin pdf free download', suggesting a lure for users seeking specific content. The presence of numerous links, including one to known malicious infrastructure, indicates an attempt to direct users to potentially harmful sites.

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.ru/pify?keyword=case+study+research+design+and+methods+yin+pdf+free+download
    • http://files.thegerryromero.com/uploads/1/3/2/6/132695467/185056.pdf
    • http://files.planetaryprogression.com/uploads/1/3/0/9/130970014/9889229.pdf
    • http://wutalibi.dlsled.com/uploads/1/3/0/7/130775085/nojod-jevemiruxefiri-jabima.pdf
    • http://files.chrisfritze.com/uploads/1/3/1/4/131406036/zujenodimevini.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xorufolikuvuzinekotawoxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/37176864650.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/57816152510.pdf
    • https://cdn.shopify.com/s/files/1/0435/4267/5608/files/xelejepuxikezuvele.pdf
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/tomozotodakajaxodob.pdf
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/34687902072.pdf
    • https://cdn.shopify.com/s/files/1/0431/1564/3041/files/nedis.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/xanoxakuwisimiperi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0700/9180/files/acquisitions_incorporated_the_eye.pdf
    • https://cdn.shopify.com/s/files/1/0436/0860/4829/files/59881612461.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/52823619535.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b7f.bin
7f730d50f46230b5d0a0984f4f3aa757ee6efd49c56c595f73044694ce837ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B7F 5668 bytes
font_01_sfnt_off00005eae.bin
ae428d22135a73ff68bb922ea59ad920257ccbb21d769aa85834fea30e9506d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAE 10644 bytes

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