Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa83efca8bdc6cc8…

MALICIOUS

PDF

75.6 KB Created: 2021-02-22 21:20:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: f4497c6a724fe6d55f9df23729f00cb5 SHA-1: ca3b081380f80cdbb01869a27b5cefa0282bc338 SHA-256: aa83efca8bdc6cc8363a464380e20b47d1ea015d0a8820b22451c46677728e42
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=the+lion+witch+and+the+wardrobe+book+age+appropriate PDF link annotation
    • https://fexalikinuzumow.weebly.com/uploads/1/3/5/3/135324316/69d7fd0756662.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375503/normal_601815b91626b.pdfIn PDF document text
    • https://lurukise.weebly.com/uploads/1/3/4/4/134454795/b9f83fc6e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413570/normal_5fd184ff7f25c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496602/normal_5ff2af199d69e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496605/normal_602fef9d3a332.pdfIn PDF document text
    • http://wavujilipazi.22web.org/codewords_89_quiz_answers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412762/normal_5ff62bf6d9198.pdfIn PDF document text
    • https://sakenudawajaka.weebly.com/uploads/1/3/4/5/134595508/wowoj_newetimejafa_xolob_jurasip.pdfIn PDF document text
    • http://wobijamitiz.iblogger.org/gewukuxonemudilutaxinid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447267/normal_5fe9ef78476ee.pdfIn PDF document text
    • https://lubafotet.weebly.com/uploads/1/3/1/3/131380208/dupobilejax.pdfIn PDF document text
    • https://fubupudixad.weebly.com/uploads/1/3/4/7/134742266/1770816.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486197/normal_601726308323c.pdfIn PDF document text
    • https://kagojidumone.weebly.com/uploads/1/3/2/7/132740327/babixorubokoxemaze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rupeguv.epizy.com/lowomodoxukefot.pdfIn PDF document text
    • http://koxowideza.epizy.com/whatsapp_status_video_assamese_sad.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/element_compound_mixture_worksheet_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/mcafee_antivirus_plus_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/videoder_apk_install.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_off0000ea69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA69 5400 bytes
SHA-256: af830feac916049a7cbe7bfc99ed3fbdf6c526d3e66f55f377b48b194ac49489
font_01_sfnt_off0000fcd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD5 10468 bytes
SHA-256: c88ef23669d02d319aad575325acb7dc6bbfe1ea832491e37500949162df4e4d