Malicious PDF — malware analysis report

Static analysis result for SHA-256 afb8e59162e233e4…

MALICIOUS

PDF

72.5 KB Created: 2021-02-25 19:41:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: aa9d4868e4a20e92dde40625568cccf8 SHA-1: 566bbb53b117a4d134d80177adec58c2f710f016 SHA-256: afb8e59162e233e4da518a2a295848a26fe3528e5b7dd789e18e72bdaa4e98de
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://druttle.ru/wb?keyword=how%20to%20unlock%20kenmore%20elite%20dishwasher%202017 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369305/normal_601cccb1c384b.pdfIn PDF document text
    • http://tosefabebiribow.scienceontheweb.net/notakigubetebuluvo.pdfIn PDF document text
    • https://pupiwukonavi.weebly.com/uploads/1/3/2/6/132682553/c7e8811320.pdfIn PDF document text
    • https://xozejobe.weebly.com/uploads/1/3/1/4/131406614/5190710.pdfIn PDF document text
    • https://konozobit.weebly.com/uploads/1/3/4/4/134456152/rililuru.pdfIn PDF document text
    • https://wimafepe.weebly.com/uploads/1/3/5/3/135326366/1629084.pdfIn PDF document text
    • http://xuvaxujogilo.mygamesonline.org/99244871150.pdfIn PDF document text
    • https://vexixizeled.weebly.com/uploads/1/3/1/3/131384380/xepazujan-gisowikasefi-vulofawix.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/tuesday_with_morrie_movie_online_free.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/blind_moca_score_interpretation.pdfIn PDF document text
    • http://kusadelopo.iblogger.org/67270928295.pdfIn PDF document text
    • https://sizamuvexiluti.weebly.com/uploads/1/3/4/6/134644091/4376047.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zevesijuduma.atwebpages.com/health_and_safety_officer_salary_ontario.pdfIn PDF document text
    • http://jeputujakajaj.epizy.com/zalerefisamifaduvalapi.pdfIn PDF document text
    • http://fujeraxujixu.epizy.com/60588232095.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_off0000dc42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC42 5704 bytes
SHA-256: 07dd656ae7405766f70569be9b19993d38300aa785b97d1176ca2f8a9a49f87c
font_01_sfnt_off0000ef94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF94 11084 bytes
SHA-256: 8ea49e708ede90b76c4c0e7683676ec3491bc1703e69b0cec9ce824310404fed