Malicious PDF — malware analysis report

Static analysis result for SHA-256 a52985af7be4d0f5…

MALICIOUS

PDF

72.8 KB Created: 2021-02-27 20:38:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6e2e90867cb0e4d24ee273f211602056 SHA-1: c615b94ed87fb95220e320f8f8c570374fb06820 SHA-256: a52985af7be4d0f5e629df7eb26d817d268813aaf33dde7cc02cd18aacf0661d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=introduction+to+java+programming+solutions+chapter+6 PDF link annotation
    • https://wokopapun.weebly.com/uploads/1/3/5/3/135388848/974ab2ac3d031.pdfIn PDF document text
    • http://fukiwurezopukof.mywebcommunity.org/nodirusadupuwulagavibadij.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/cihieO0/xumajubabiredexefe.pdfIn PDF document text
    • http://zikewexer.scienceontheweb.net/59215478315.pdfIn PDF document text
    • https://lebabipiw.weebly.com/uploads/1/3/0/9/130968925/nafipizim-golitudazurijux-fepewexekotev-ditudoxof.pdfIn PDF document text
    • https://cdn.sqhk.co/govuzupikiwe/ljj1Kgi/12790307820.pdfIn PDF document text
    • http://pakirekugep.scienceontheweb.net/41384206265.pdfIn PDF document text
    • https://betebawaxudu.weebly.com/uploads/1/3/5/3/135388356/eebba576fac92.pdfIn PDF document text
    • http://bebolekuku.22web.org/port_my_landline_phone_number.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/rowidagenerafunukanaraj.pdfIn PDF document text
    • http://siviveko.getenjoyment.net/jivafuzijunajubiw.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/runuzitexokol/video_bts_funny_moment.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/samogozitaredekusis.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/online_payment_on_google_forms.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_off0000e043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE043 5712 bytes
SHA-256: 49dcc5ee6119d674b6da860e5762b508ed17eb955f9e1c1f8ca3d1f43dcbd3ae
font_01_sfnt_off0000f395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF395 10136 bytes
SHA-256: d3bb3c431ea96a326adef972f440549ea826bb9562830615a14808258fda79a5