Malicious PDF — malware analysis report

Static analysis result for SHA-256 5544fd1050333707…

MALICIOUS

PDF

72.6 KB Created: 2021-02-23 01:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 58bd4abe0b361fae41b374f2bf4ec672 SHA-1: 6a2073b2eab94fff54ea748f6c2e637ffd7f9ebc SHA-256: 5544fd105033370756b6706d43e80028c7549ecb05a54d6ce883725bf6866cb0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=creating+cladograms+worksheet+answers PDF link annotation
    • http://itali-big.space/943320701466hxqi.pdfIn PDF document text
    • http://sumaralomemev.iblogger.org/speed_time_graphs_worksheet.pdfIn PDF document text
    • http://getcreditcheck.info/author_s_purpose_pie_activity_worksheetv0olu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423700/normal_5fe62e8c461a9.pdfIn PDF document text
    • http://genusttwsr.fun/directv_now_hbo84gnw.pdfIn PDF document text
    • http://vipmanmarket.space/awwa_manual_m17ig4uk.pdfIn PDF document text
    • http://13millions-warzone.store/77502217626qn7vy.pdfIn PDF document text
    • https://lakupofudeb.weebly.com/uploads/1/3/0/7/130775354/podetukujebez-kojuxemex-wobifi-pujikofojotev.pdfIn PDF document text
    • https://lakogobeza.weebly.com/uploads/1/3/4/0/134096968/wuwerogapegomu.pdfIn PDF document text
    • http://microdigitalmeter.xyz/60838934581i54pp.pdfIn PDF document text
    • https://legaxebojidonet.weebly.com/uploads/1/3/0/7/130775342/f068e3505c381f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403417/normal_5ffc8dc3b3535.pdfIn PDF document text
    • http://sentytld.online/towagumukitojizuruwarinezoevio.pdfIn PDF document text
    • http://airned.ru/dunigotoxebi2f0zn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sivopob.epizy.com/37218660597.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/xubofobodugex.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/pikapunukubiwomevabuvaz.pdfIn PDF document text
    • http://vekifaxofezawe.epizy.com/62889660444.pdfIn PDF document text
    • http://wurasegato.rf.gd/vimomuziwukorum.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_off0000e08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08E 5416 bytes
SHA-256: 8e1e6cebd931a810c6a548259786d76556eb4f5bbc469af9f5abec13210f26d2
font_01_sfnt_off0000f2d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D9 10104 bytes
SHA-256: c69e30a2ad08d4ef9196f756b96ac5c37fa71b8229e1fa37597fd839aa5b4407