Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b936692500fd66…

MALICIOUS

PDF

71.9 KB Created: 2021-02-16 22:54:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3ed80442d068ee6e5bf7dedc05bc8f6d SHA-1: 033449601bd9329bb6ebd78c66db56d07093be3d SHA-256: 47b936692500fd6664ab65249520bb8aa89d9ae0a7caaf04bf9d8f2e6be52a25
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://jottigo.ru/aws?utm_term=subtraction+with+borrowing+worksheets+2nd+grade PDF link annotation
    • http://4kuhd.me/mystic_messenger_707_route_day_6d794c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408197/normal_60026c24492e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391954/normal_5fee4278a06af.pdfIn PDF document text
    • http://wordsideget.top/nakagoxajerelifaxalab0egza.pdfIn PDF document text
    • http://uscreditmonitoring.info/13_original_colonies_map_worksheetc920q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417827/normal_5ff8b78398428.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387054/normal_5ff25d03a22f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454281/normal_5fd6d26005c59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497082/normal_5fd99110c7d52.pdfIn PDF document text
    • https://cdn.sqhk.co/jojojidatun/Koie9ia/jigagabema.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420260/normal_6016155231099.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rimugerumu.rf.gd/eicher_school_admission_form.pdfIn PDF document text
    • http://melitere.epizy.com/minority_interest_balance_sheet_format.pdfIn PDF document text
    • http://sidakofonol.epizy.com/meaning_of_balance_sheet.pdfIn PDF document text
    • http://nikuzemadol.rf.gd/weekly_jobless_claims_report_today.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_off0000dd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD87 5700 bytes
SHA-256: a0a48ab92501a257b520d2f99977d4d5fa5367cbcce1e9ba60c0817c512675b6
font_01_sfnt_off0000f0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F6 9860 bytes
SHA-256: b730e94f6e99b03e71fa8bf5b1320612b6df4dc7c536ac106ce8ae0fdaf8a2c9