Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef1184eecb139c2…

MALICIOUS

PDF

71.2 KB Created: 2021-02-15 12:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d7563628ad66a0a101e6f3c9fc1f2684 SHA-1: 36a33682520596c034dc118ca8b830f2ddc0aff0 SHA-256: 3ef1184eecb139c240fae806860207540b93a10cb2298db27f4b703e765d3f84
186 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
  • 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://seumenha.ru/wix?keyword=accumulation+function+definition PDF link annotation
    • https://molesomux.weebly.com/uploads/1/3/2/6/132681378/vitesevagajufulonuk.pdfIn PDF document text
    • http://info-pages.ru/78643593424ikq9u.pdfIn PDF document text
    • https://bujasosepamus.weebly.com/uploads/1/3/4/6/134626994/gakoborokaloxabi.pdfIn PDF document text
    • https://fexasesari.weebly.com/uploads/1/3/1/0/131070539/bebejumuvojezizozo.pdfIn PDF document text
    • http://myyshooop227.site/45229349114wtsb7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404292/normal_6004a1d29f74b.pdfIn PDF document text
    • https://wiwanozamo.weebly.com/uploads/1/3/4/3/134306351/559b5f77312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465003/normal_60228ab94bb6e.pdfIn PDF document text
    • http://hookup153.site/top_rated_deck_stain_consumer_reports6xkuc.pdfIn PDF document text
    • http://xomapometafa.iblogger.org/26042019676.pdfIn PDF document text
    • https://bofeliwibetu.weebly.com/uploads/1/3/2/8/132814086/maliwo_rewirum_fazikirokagos_newofo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/52624302884.pdfIn PDF document text
    • http://gamupuzif.epizy.com/dejigigomekemototopajoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/forrester_wave_report_rpa_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/29432350739.pdfIn PDF document text
    • http://penefilagew.epizy.com/cyber_hunter_lite_android.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_off0000db1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1E 4884 bytes
SHA-256: a26310a0273da09fe7302970fbf0e30bc69a0ae2cd33a543d629c85989aadfad
font_01_sfnt_off0000ebac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAC 10816 bytes
SHA-256: 698e7de0e2620fc85bc6b005fcc4de2202882f77f0d04241a7c1819bed947141