Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3aef7f4d6cd3132…

MALICIOUS

PDF

87.3 KB Created: 2022-05-18 01:11:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: a5c4071119394c6ff8a27d3cf1d3745e SHA-1: d106d1dd745f6c0797890476c1b6bed96667b511 SHA-256: b3aef7f4d6cd3132f8ff419332f845da765ae274bab002e1c749fd8400041ca8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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
  • 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.
  • 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://colod.co.za/XSRYdR1H?utm_term=bogliolo+patologia+geral+8+edi%C3%A7%C3%A3o+pdf+free+2017+free PDF link annotation
    • https://aimtronu.org/userfiles/file/jifolomufavatosudewixep.pdfIn PDF document text
    • https://viboot.traigiongthuha.com/ckfinder/userfiles/files/88282680431.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/5nouhnvj030g5tp7l75avdurf3/36646251961.pdfIn PDF document text
    • http://legrand-valena.su/kcfinder/upload/files/29498858829.pdfIn PDF document text
    • http://jatechkj.pl/upload/fck/file/1974196120.pdfIn PDF document text
    • https://xeforosoxipu.weebly.com/uploads/1/3/4/9/134900432/6960581.pdfIn PDF document text
    • https://okinawa4d.com/contents/files/63150653729.pdfIn PDF document text
    • http://demo-enriquemora.shopcloud.es/ckfinder/userfiles/files/sifagixaxulefolewotudagi.pdfIn PDF document text
    • https://xovepidovewap.weebly.com/uploads/1/4/1/6/141633064/7534328.pdfIn PDF document text
    • https://congchung7.com/upload/file/nelada.pdfIn PDF document text
    • https://mitapesazo.weebly.com/uploads/1/3/4/6/134652839/767164.pdfIn PDF document text
    • https://purelukanixavaj.weebly.com/uploads/1/3/1/4/131454065/jumobagesovofo_wozapo_lawezonize.pdfIn PDF document text
    • https://ragadavifomo.weebly.com/uploads/1/3/5/3/135306528/43dbb4b66d53.pdfIn PDF document text
    • https://gebevomipo.weebly.com/uploads/1/3/0/7/130740462/jarilowetizokez.pdfIn PDF document text
    • http://www.johnrealestate.in/ckeditor-ckfinder-integration/uploads/files/jinosopu.pdfIn PDF document text
    • https://gugagefa.weebly.com/uploads/1/3/4/3/134343265/22a784ff59b392.pdfIn PDF document text
    • http://linhkienzin.vn/hinhanh_fckeditor/file/femobosagaza.pdfIn PDF document text
    • https://vijilipaguwojig.weebly.com/uploads/1/3/4/8/134872157/13a43b564.pdfIn PDF document text
    • https://vidanametok.weebly.com/uploads/1/3/4/3/134318125/2027957.pdfIn PDF document text
    • https://onthespothousing.com/userfiles/file/relejofutadabaver.pdfIn PDF document text
    • https://xenizejaruwew.weebly.com/uploads/1/3/4/7/134709329/girupok.pdfIn PDF document text
    • https://kuzikumivinoli.weebly.com/uploads/1/3/4/2/134235757/7268291.pdfIn PDF document text
    • https://zunitaxipef.weebly.com/uploads/1/3/1/3/131398356/1165108.pdfIn PDF document text
    • https://mikujisevoj.weebly.com/uploads/1/3/7/5/137511904/momowogabek.pdfIn PDF document text
    • http://iuppiteredizioni.it/kcfinder/upload/files/tugovegizunowitomem.pdfIn PDF document text
    • https://weduluminedote.weebly.com/uploads/1/3/5/3/135327520/xojenetewede_nurob.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000e70b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e70b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e70b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF22 11468 bytes
SHA-256: ccab52955ec1f463344435e3e45f29f08c4558ffd9b3f93685b7e91c0959fb6a
font_02_sfnt_off000119ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119EE 20548 bytes
SHA-256: 9100984b149f235c8a77dadc6dd84523d0fdb1d98a001d64cc7985c8452af312