Malicious PDF — malware analysis report

Static analysis result for SHA-256 686ced283c8a8f6a…

MALICIOUS

PDF

74.1 KB Created: 2021-02-10 09:03:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8e021bdd348ece991cac47f0ef9ca548 SHA-1: eb7ae96090819cee88dbd23a582f97a7b741cbd1 SHA-256: 686ced283c8a8f6a0e9eb0f71bc2ac7b85b79e8db5eb513aa1de48361cc0f5f9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/wb?keyword=circle%20of%20fifths%20wheel%20pdf PDF link annotation
    • http://harmony-market.ru/manualidades_para_halloween_educacion_infantil15eol.pdfIn PDF document text
    • http://musc-media.xyz/the_use_of_anointing_oil7uh8p.pdfIn PDF document text
    • https://watumuguv.weebly.com/uploads/1/3/2/6/132695830/vovaxijapel.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/la_llorona_coco_sheet_music_freehnl95.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/ear_bandage_procedureo9jm0.pdfIn PDF document text
    • http://pshcomonhere.xyz/brother_jx1420_sewing_machine_manualbtp7r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408002/normal_5feb476a56950.pdfIn PDF document text
    • https://zubikuzo.weebly.com/uploads/1/3/1/4/131453486/dipof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nokizotef.rf.gd/wasabi_sushi_bento_nutritional_information.pdfIn PDF document text
    • http://lovurezis.rf.gd/wojozunuz.pdfIn PDF document text
    • http://namavorudil.epizy.com/nattamai_song_starmusiq.pdfIn PDF document text
    • http://fuwuwiri.rf.gd/environmental_risk_assessment_template_uk.pdfIn PDF document text
    • http://mafakizukizunof.epizy.com/57252305877.pdfIn PDF document text
    • http://potopaf.epizy.com/technical_manager_cv_format.pdfIn PDF document text
    • http://muvusewogazobil.rf.gd/90494821148.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_off0000e7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D4 5032 bytes
SHA-256: 321918635b47b88f4edd07ebcebf61071564c3d4792be911b824e22f0e5468d6
font_01_sfnt_off0000f900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF900 10172 bytes
SHA-256: 54b8cda896c4ad369c0597f0daabd7e6d34d1a928f6e0a14dd4bb0f5315443cb