Malicious PDF — malware analysis report

Static analysis result for SHA-256 b191563466ba0721…

MALICIOUS

PDF

71.8 KB Created: 2021-02-21 00:59:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 387a8edd8aee5a8f6cc02578c834c426 SHA-1: 5e0c4171e1a9b708fd0b5105a43903efc7e8fd0f SHA-256: b191563466ba07211cfefa7678384260cda71aa5d52f40b7864b83845dc79a70
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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=2007+saturn+ion+service+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4484399/normal_5fcf47343f806.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491926/normal_602f009532fd3.pdfIn PDF document text
    • http://vittorguxx.site/99773634803rv5b2.pdfIn PDF document text
    • http://successinyourlif.website/resolver_ecuacion_de_tercer_gradoo4jz6.pdfIn PDF document text
    • http://istlan.fun/do_you_put_a_comma_after_the_day_of_the_week_before_the_date5ppc5.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/dobososat.pdfIn PDF document text
    • http://shmelev.pro/libertarian_party_platform_on_educationx38ko.pdfIn PDF document text
    • http://bevarep.22web.org/as_bases_quimicas_da_vida.pdfIn PDF document text
    • http://reduslim-shop.website/78014019460utmdm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_602e250e6ce42.pdfIn PDF document text
    • http://astropsychology.website/crossfire_hurricane_rolling_stones_online0gqm4.pdfIn PDF document text
    • https://vususujisalit.weebly.com/uploads/1/3/4/4/134490496/dibogobadulefumilon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d5de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5DE 5264 bytes
SHA-256: 186974f58f92e8e8d4c5a2f6e7c1afc261d855224397d8dcf420cfcb78ba7a4c
font_01_sfnt_off0000e7b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B5 13556 bytes
SHA-256: 027f014678fc19a99970a266ba5d5ad5cf98dd35c94c9fcd652cb0cee0b8329f