Malicious PDF — malware analysis report

Static analysis result for SHA-256 54103ede64ebedea…

MALICIOUS

PDF

64.9 KB Created: 2021-02-18 19:16:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e3c33d847e873f392dacb9d03da73de2 SHA-1: 9b9ecd3b2db3b3bd235f390dd944c8006e779894 SHA-256: 54103ede64ebedea7abbc4b4227d571fac0949856213bcceccbd690e111ef51d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=keystone+church+ankeny+vimeo In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376857/normal_60258987c9893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377662/normal_6023e5123074a.pdfIn PDF document text
    • https://bemafaparad.weebly.com/uploads/1/3/2/6/132681832/1891512.pdfIn PDF document text
    • https://sotugenedoximo.weebly.com/uploads/1/3/4/0/134040923/sejef-jufirojuroxalub-juvetidovuritik-solodiwewuxitex.pdfIn PDF document text
    • https://tidoxanarapora.weebly.com/uploads/1/3/2/7/132710787/6be88d0bdb7e.pdfIn PDF document text
    • http://studyweb.site/second_type_conditional_clause_exercisesom5e0.pdfIn PDF document text
    • https://pipenibeteza.weebly.com/uploads/1/3/4/5/134508730/repigetoxelul-rovatu-zowajezanu-xobovulak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486200/normal_5ff1637ccfd55.pdfIn PDF document text
    • https://kimogixolemalo.weebly.com/uploads/1/3/5/9/135964987/xefuzifowo_xusar_rikovogu_xojuperud.pdfIn PDF document text
    • http://dkblogin-de.com/pokemon_the_movie_2000_full_movie_doegaiq.pdfIn PDF document text
    • https://masodorenos.weebly.com/uploads/1/3/0/9/130969057/pawenanugafuxuxag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416930/normal_602589ea10076.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369932/normal_5ff719d5a8e86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426549/normal_5fef47cc48185.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_off0000c1c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1C8 5200 bytes
SHA-256: a3f35c6214726afc6607d279968d795c91d9f0ee9f4b82af9073e63e23a07607
font_01_sfnt_off0000d360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD360 10388 bytes
SHA-256: 61bea3ab0fa1901ebaf4b6f7145823d04a23c0a64c8887bfafb4d4790964ec79

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