Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac3b0072fb064a84…

MALICIOUS

PDF

61.5 KB Created: 2021-02-21 21:17:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 97461b78990c68cb1c3cf93c7d1da8f7 SHA-1: 0daf482b798e31425d42998f65c0ae091938c872 SHA-256: ac3b0072fb064a840a6b797e93648d702b5f8b8b4ec692da2abebbb1ed7b8a08
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://baarspo.ru/123?utm_term=bontrager+300+bike+computer+instructions PDF link annotation
    • http://iminn.ru/cell_structure_concept_map_answersg8z4u.pdfIn PDF document text
    • http://supermagazforsale1.xyz/30232970307ox8ck.pdfIn PDF document text
    • http://site-shop.xyz/bidogeroboretejodzjq8f.pdfIn PDF document text
    • http://nosinoski.shop/nagulalitazt27aj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454575/normal_602c6070e8e98.pdfIn PDF document text
    • http://idealica-official.website/paxekisez0tgnr.pdfIn PDF document text
    • http://italy50wow.pro/guardian_bl_novel_translationir7x2.pdfIn PDF document text
    • http://fb-pageunderreview.com/30323807240okjzg.pdfIn PDF document text
    • http://infonewsuk.site/nixurekikisamoropikaniwahw7i6.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/aiag_apqp_formatshd4zs.pdfIn PDF document text
    • http://feyakast.online/93767338815vd3pg.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/j7TpkaS/28713949168.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/film_hamburger_hill_19876cxkf.pdfIn PDF document text
    • https://cdn.sqhk.co/zodozane/hhg2vja/cartoon_paper_and_pencil_pictures.pdfIn PDF document text
    • http://50offstore.pro/9._snf_matematik_konu_anlatm_indcomlc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369153/normal_5fe206ba8069d.pdfIn PDF document text
    • http://usejus.pro/mixing_and_mastering_free_software6qpiv.pdfIn PDF document text
    • http://prodson.space/673694127140xmdf.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_off0000b3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3DE 5780 bytes
SHA-256: 09e8694895475654a0a7e304caa3b331641668cab668a8f0dfdc031e3bec705e
font_01_sfnt_off0000c774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC774 9852 bytes
SHA-256: d0ca80b1c1fc3109732d3d910771928b9a064ee3a7a30e730fecb3e688f22135