Malicious PDF — malware analysis report

Static analysis result for SHA-256 14926c64a18a0ba3…

MALICIOUS

PDF

72.7 KB Created: 2021-02-15 12:56:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cb43b6c1fc63d7e116cea1ba0951ccc3 SHA-1: a6bcb9eb36447ff1f112b66be07ed50db2a3a121 SHA-256: 14926c64a18a0ba3b77161d4cffabadf7f604d5ce774d71a120bcfd52dd9e73d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://crophysi.ru/wix?keyword=tipos+de+metales+preciosos In PDF document text
    • https://vagobodowi.weebly.com/uploads/1/3/4/6/134600101/7ffedbaa556ae2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481156/normal_5ff5e89734db2.pdfIn PDF document text
    • http://sokokusulamubi.22web.org/tourist_guide_book_design.pdfIn PDF document text
    • https://dagaroxir.weebly.com/uploads/1/3/5/9/135973008/sigaxazepal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469106/normal_5ff79df348c63.pdfIn PDF document text
    • http://ravitidi.22web.org/mi_system_app_updater_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484821/normal_600efa840cd90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494681/normal_6022f80fa132f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464330/normal_601c67ae4c50b.pdfIn PDF document text
    • https://burigazipe.weebly.com/uploads/1/3/4/7/134764527/rixenusiroporop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420600/normal_6016e223dd19b.pdfIn PDF document text
    • https://tatogupuragafa.weebly.com/uploads/1/3/4/0/134096405/pajos.pdfIn PDF document text
    • https://nizuwutino.weebly.com/uploads/1/3/1/4/131482859/f6ce6e21caa4e.pdfIn PDF document text
    • https://livubefelamujir.weebly.com/uploads/1/3/4/8/134899239/1570401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504641/normal_6029e4e76cadd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425511/normal_601ba326528aa.pdfIn PDF document text
    • https://xujupowosorome.weebly.com/uploads/1/3/4/4/134485259/tamavobe.pdfIn PDF document text
    • https://vuzazaba.weebly.com/uploads/1/3/0/8/130813658/3350986.pdfIn PDF document text
    • https://xaxexuwolak.weebly.com/uploads/1/3/5/9/135978614/sixopogekol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367013/normal_6005abaa86da3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xakizeko.epizy.com/vokitopitaxawagirife.pdfIn PDF document text
    • http://tofezaniv.rf.gd/apocalypse_now_soundtrack_free.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_off0000dd20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD20 5168 bytes
SHA-256: 4d873ca45de2a15dd3f304c0360e8428857977317adfcc13ccd3e5d9bda961d8
font_01_sfnt_off0000ee95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE95 11556 bytes
SHA-256: 153254b6280d1ba602ba2d427ec64c78d7ffacee54b68cc880ebdce98c62d106

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