Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f87e34f9b9016ef…

MALICIOUS

PDF

71.4 KB Created: 2021-02-06 17:11:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3bf18ded9910d13aa2de0baf4188ad0a SHA-1: f109ba90fbc5b69b81955cbce6fb49289a5da877 SHA-256: 6f87e34f9b9016ef99788afbd69fd309045284621904dad18daeee0bb659e2b2
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/wb?keyword=energie%20renouvelable%20algerie%20pdf PDF link annotation
    • https://betetaguzom.weebly.com/uploads/1/3/2/3/132303315/572067.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420589/normal_601210fc53015.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366654/normal_5ff3e6ad3c6fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420025/normal_601b493520a91.pdfIn PDF document text
    • https://nimimemuxigu.weebly.com/uploads/1/3/4/4/134488465/8218184.pdfIn PDF document text
    • https://lilikegemuvil.weebly.com/uploads/1/3/1/3/131398424/resasi_kubitadezam.pdfIn PDF document text
    • https://rimimasosonajis.weebly.com/uploads/1/3/2/6/132681992/bibubikuvu-gibowivelebik-xitotum.pdfIn PDF document text
    • http://peludofnor.fun/26340117364jtwyj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5fd7d3a06ee40.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454045/normal_600686cf6434b.pdfIn PDF document text
    • http://experiment.website/pikachu_light_ball_vs_raichu_magneteh9o9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390069/normal_600c0ade949c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468828/normal_6009dee6bf828.pdfIn PDF document text
    • http://bigowet.xyz/xebegekogivokudufodogt538t.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/kefodek/69575534264.pdfIn PDF document text
    • http://wefazor.epizy.com/fundamentals_of_accounting_1.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/android_adb_backup_system._img.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/sukinuvu.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_off0000d785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD785 5188 bytes
SHA-256: a35de1621d80abd7a83307f744f87ce9c0ef8bbddbe1eff2e9036ce8d7db68b9
font_01_sfnt_off0000e943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE943 12008 bytes
SHA-256: 943193b1d183eca5db9c93ba1edd72e453cac24e11b74a7f0a1a77358ee4e8b2