Malicious PDF — malware analysis report

Static analysis result for SHA-256 2135b780ded7dfb3…

MALICIOUS

PDF

75.4 KB Created: 2021-02-13 10:14:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: de31794a4b988b8025986787a1df0d10 SHA-1: 1464b84bf94c6be9d90411ff60e8fcef673a87ec SHA-256: 2135b780ded7dfb3a03c748dd085c3abfc5e1293e24a136bb8de3c19823ad057
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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/123?utm_term=generative+energy+restoring+the+wholeness+of+life In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5fd173610c9ae.pdfIn PDF document text
    • http://toxedajenoxin.66ghz.com/22779465357.pdfIn PDF document text
    • https://femowoziso.weebly.com/uploads/1/3/1/3/131398515/lorekofemikomuka.pdfIn PDF document text
    • http://biolinkus.me/tumblr_girls_g_eazyanfhj.pdfIn PDF document text
    • https://levevuwakute.weebly.com/uploads/1/3/4/9/134904524/88b431c0ead.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369648/normal_5fd1960648307.pdfIn PDF document text
    • http://shoop-ff.ru/scondoo_cashback_deals_couponsoln8l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479474/normal_5fe92197e9228.pdfIn PDF document text
    • http://masito.space/vobekekt3y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413227/normal_5fe4fc949c904.pdfIn PDF document text
    • http://repair-foto.ru/free_bootstrap_blog_html_templatesyir9a.pdfIn PDF document text
    • http://supernefritroller.xyz/begutizulaq0plm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lutatiduz.epizy.com/bluewin_mail_app.pdfIn PDF document text
    • http://bojibag.epizy.com/jopumivekimodulekova.pdfIn PDF document text
    • http://jevoneloz.epizy.com/sikuk.pdfIn PDF document text
    • http://bomajada.epizy.com/mizozuxelukifupa.pdfIn PDF document text
    • http://bofiragomux.rf.gd/brilliant_pala_online_application_form.pdfIn PDF document text
    • http://nadefivetokilak.rf.gd/6-_4_transforming_linear_functions_worksheet_answers.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_off0000e889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE889 5316 bytes
SHA-256: 7d25a668cdc01c029c5ab3245310a2a2185de260767b12f20840bbb8884b4af3
font_01_sfnt_off0000fab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB7 10724 bytes
SHA-256: 410d723b7cc622960c82dbc2525eebbb99b0825749d1a5db17928a03d98b0d97