Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca97a61e6c441fb8…

MALICIOUS

PDF

71.5 KB Created: 2021-02-26 19:49:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c236b47a068968342f8b5775650a1bb7 SHA-1: 3be55217c4ffb6dcd4835dd618bdbfb9b62a412c SHA-256: ca97a61e6c441fb81aaba6a02c1275bae8b9fa58e8216a16bc7c2b94e524065e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=insert%20table%20in%20jupyter%20notebook%20markdown PDF link annotation
    • http://jofifuneku.medianewsonline.com/asus_rt-ac66u_factory_reset_not_working.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/54998366426.pdfIn PDF document text
    • https://xufefizomuziz.weebly.com/uploads/1/3/5/3/135346589/8977511.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/is_the_equity_market_open_on_columbus_day.pdfIn PDF document text
    • https://kefawefixak.weebly.com/uploads/1/3/0/7/130738991/2e8018d23.pdfIn PDF document text
    • http://questotzvezd.space/high_paying_night_time_jobsiwepd.pdfIn PDF document text
    • http://naturfresh.space/vitowofagomikekovisuwovel4u6z.pdfIn PDF document text
    • http://creamwalls.online/counter_strike_1._6_servers_free0tg2o.pdfIn PDF document text
    • http://xoxuvajes.mywebcommunity.org/72138264374.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/78524850428.pdfIn PDF document text
    • https://lokurosafo.weebly.com/uploads/1/3/4/4/134479987/letolubijazes_zubituxotesi_mawibiliji_binapinav.pdfIn PDF document text
    • https://javagakikidubat.weebly.com/uploads/1/3/0/9/130969576/d293350358f.pdfIn PDF document text
    • https://dibovasejul.weebly.com/uploads/1/3/1/0/131070518/sufeviwesode.pdfIn PDF document text
    • https://rewiwuzaziba.weebly.com/uploads/1/3/5/9/135959403/1998544.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tapoloferazuziw.atwebpages.com/dagis.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_off0000d3fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FE 5516 bytes
SHA-256: 82f67fa4100ab68d9d4dd8c4e19ebd0a4264781527533f27c045805fa0080207
font_01_sfnt_off0000e6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BE 12760 bytes
SHA-256: 6d1d45ac9d273979eed64984faec81ae223b406081f1368224c5c9a5103d7bc3