Malicious PDF — malware analysis report

Static analysis result for SHA-256 e245b0ce70578cf2…

MALICIOUS

PDF

60.4 KB Created: 2021-02-06 05:49:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6b45dfd767f54f64a2794d2d09c1ef53 SHA-1: f5c5696eb85dbdccb7a6981424b883fd34e57f99 SHA-256: e245b0ce70578cf20afd41bce009add89d95a82e456432eef12e42f8b060e1ad
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/wb?keyword=tabeer%20ur%20roya%20pdf%20online In PDF document text
    • https://cdn.sqhk.co/fimegasaz/dijhzhc/lock_screen_shortcut_iphone_x.pdfIn PDF document text
    • http://wegasanapifare.iblogger.org/difofapunuvulibatilarif.pdfIn PDF document text
    • http://dobanojuwelog.22web.org/binding_coil_of_bahamut_turn_5_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459058/normal_5fdaf300e0284.pdfIn PDF document text
    • http://lixejinokegiror.22web.org/jiwajomu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_6015ee56adbda.pdfIn PDF document text
    • https://rekizutor.weebly.com/uploads/1/3/0/9/130969391/koleturazep-mudigaxigexo-panimalufutuvuj.pdfIn PDF document text
    • https://xedasijaw.weebly.com/uploads/1/3/1/4/131453620/norezumafebixo_lafomi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470221/normal_5fea21c7ca931.pdfIn PDF document text
    • https://cdn.sqhk.co/kilalovuge/jacMpgj/naxefubevilamuxodo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411919/normal_601d7e7cc5d6f.pdfIn PDF document text
    • https://sozazajigosana.weebly.com/uploads/1/3/0/7/130739782/zomepexoto-punirobexobavo-zaxaforuzide-xuvip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xifebudi.epizy.com/basilea_i_1988.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/advanced_filter_excel_another_sheet.pdfIn PDF document text
    • http://rozopujonabesix.epizy.com/tulere.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_off0000b11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB11D 5048 bytes
SHA-256: ba1ca145207c172b5c71a0e37f46b8699dd74584eb8fc3799ec66f2afc23e3bb
font_01_sfnt_off0000c25e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC25E 10112 bytes
SHA-256: c557f518d9af93be7815edb2702d420daa2e506d12f8d3b657f8235680399526

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