Malicious PDF — malware analysis report

Static analysis result for SHA-256 0518ae85bbfeec5a…

MALICIOUS

PDF

66.7 KB Created: 2021-02-15 17:38:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 09911528c8d5628bd10f07eaee8252ef SHA-1: 9e8d9f86fe0619118c4421421656d5ae385b279f SHA-256: 0518ae85bbfeec5ac943875b10faab2b95b4c494e766861961fdfc01f3e3da3b
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://baarspo.ru/wix?keyword=north+carolina+biology+eoc+study+guide+2016+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5fe64e037dc96.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/MgeYxia/76688312903.pdfIn PDF document text
    • https://jakakatis.weebly.com/uploads/1/3/5/3/135323185/kewimazuvo.pdfIn PDF document text
    • https://tugojomabam.weebly.com/uploads/1/3/4/5/134588125/5949958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500417/normal_6014ec7a70f36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462345/normal_600da6082fec3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450160/normal_5fedbe72681f6.pdfIn PDF document text
    • https://gutirupivib.weebly.com/uploads/1/3/4/7/134768574/2416994.pdfIn PDF document text
    • https://finepeva.weebly.com/uploads/1/3/5/3/135347337/metozujasuze.pdfIn PDF document text
    • http://sanalunuguto.22web.org/75756577224.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482619/normal_5ffadf4055419.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vawibafutij.rf.gd/vavolemasasizama.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/89452636262.pdfIn PDF document text
    • http://wowifimeziv.rf.gd/34617066107.pdfIn PDF document text
    • http://xezinupuwe.epizy.com/holden_karau_high_performance_spark.pdfIn PDF document text
    • http://vorasatijede.rf.gd/fujimotuwubidazokuril.pdfIn PDF document text
    • http://firuwasuwubo.epizy.com/b._a_pass_khatrimaza.pdfIn PDF document text
    • http://fiwofitobuz.rf.gd/l2r_your_guide.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_off0000c7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7D1 5984 bytes
SHA-256: a3ecc9362bb535ac5bc604d2c9150258e7049241fc9b06fdd8dc41d4c351d878
font_01_sfnt_off0000dc45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC45 9772 bytes
SHA-256: 17c798641ff7aa204059fee80efd31298860eb2feed1833bb6ce563d15cdf387