Malicious PDF — malware analysis report

Static analysis result for SHA-256 226492d3cd068de8…

MALICIOUS

PDF

41.0 KB Created: 2020-10-16 08:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ee0bba9ff126e3b314f035832f349bb0 SHA-1: b73bca71042407c2ef3a37d749fdd66642718447 SHA-256: 226492d3cd068de8efc01d98acdcff41daf00cd4c22e15f5703b25062c5edb93
124 Risk Score

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/123?keyword=euro+truck+simulator+2020+apk+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_5f88f8edc5455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5f879b935ea08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367271/normal_5f873b1ee4340.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f88953ccabac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_5f879de9d90e4.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/9945460.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/katemofiseturoj_lakagez_kunajomeba_tajofe.pdfIn PDF document text
    • https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/916753.pdfIn PDF document text
    • https://wuwenivavubujer.weebly.com/uploads/1/3/1/4/131437756/rubul.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/tolatadubezi.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/9506eb3ef.pdfIn PDF document text
    • https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/wajosemimanisonoliro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f87b80532cc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5f8783cbde305.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/1/0503/3938/1433/files/soben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6404/2396/files/15013220277.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5579 5608 bytes
SHA-256: e85529176185f69a11574c12a63fa063f980992ae16fa9f06b21fb67a4bd4bab
font_01_sfnt_off00006888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6888 2040 bytes
SHA-256: 8a8c37dc2cafa78597267d7cd5dbac1f43d7be5c66e583c9463892b2cc90b9ec
font_02_sfnt_off00007209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7209 10608 bytes
SHA-256: ac1d43432025ed8208796837f9655c7b28aec38bcaae57ce1892e621a7ed6010