Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c4977dda52127e9…

MALICIOUS

PDF

72.5 KB Created: 2021-02-20 15:08:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 684dd1e9ee0d4239a05e4eee27b36caf SHA-1: d9d5dfb93589bec15746df8f40fd91428c6e9350 SHA-256: 1c4977dda52127e97edd86238a5a592ab9138d54468965f574a2894cec5e9b78
126 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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/aws?utm_term=what+is+the+black+and+white+symbol PDF link annotation
    • https://nunebavakagepas.weebly.com/uploads/1/3/4/4/134446468/kagepu-vagibimuxobog-xonadogog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417988/normal_6020a9901ff22.pdfIn PDF document text
    • https://luwojasog.weebly.com/uploads/1/3/1/3/131380471/goxaku-vevanefira-xijipokaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390324/normal_5fd05caf276b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387408/normal_5fd622c887004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391024/normal_602c6724500be.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/rbse_11th_maths_book_downloadjel1b.pdfIn PDF document text
    • https://zudejuzire.weebly.com/uploads/1/3/2/6/132681250/feb53eaa7d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375889/normal_602756a646b82.pdfIn PDF document text
    • https://xelixexojiga.weebly.com/uploads/1/3/4/1/134108676/pofabunalem.pdfIn PDF document text
    • https://gufiferufa.weebly.com/uploads/1/3/2/3/132302963/zegurom-vinodenaripuge-moxuzam-wumore.pdfIn PDF document text
    • https://fujulisu.weebly.com/uploads/1/3/4/0/134042697/5344821.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dekogamik/1727838569.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/jaxixorekujepexizaga.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/91304223941.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_off0000df2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2E 5492 bytes
SHA-256: 312c06f563d5fb2ad67d5656e7b5daf885fc6513e0ae1e6d697897cfa2099a3e
font_01_sfnt_off0000f1d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D9 10336 bytes
SHA-256: 628559b92a0b44d31dbc21d98df86b983ecde5c60ff60ffff647b524134b353d