Malicious PDF — malware analysis report

Static analysis result for SHA-256 46aceba7927b9a1a…

MALICIOUS

PDF

73.1 KB Created: 2021-02-24 15:20:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e3732a162ce7dc4e1441c43e36c71cf6 SHA-1: 9d98ea0d27becfc0577918baa431bcb978c28a01 SHA-256: 46aceba7927b9a1ae0d22f32a825174296d1502a7d9d7a4e214dcfbe218274c3
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=how+to+set+up+cable+box+comcast In PDF document text
    • http://xusibuvuzos.22web.org/vevisigotovoxunuz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387819/normal_5fe550b081279.pdfIn PDF document text
    • https://cdn.sqhk.co/jokawefezo/biahezu/96561173338.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403938/normal_5ffe983679913.pdfIn PDF document text
    • https://cdn.sqhk.co/vowibesep/dhdmihh/subway_customer_service_number.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379220/normal_601b235e5d11c.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/fWo8lja/xamobozititekutalizus.pdfIn PDF document text
    • https://cdn.sqhk.co/lijuwezasip/gTibRhj/vubibaturutivewatuvejuz.pdfIn PDF document text
    • https://cdn.sqhk.co/ramidazumiko/8JBgfgi/2028929162.pdfIn PDF document text
    • https://cdn.sqhk.co/rubovadu/03XD6FV/56659928950.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wikevutu.epizy.com/personal_house_offer_letter_template.pdfIn PDF document text
    • http://tozoduva.rf.gd/how_to_calculate_average_exchange_rate_in_excel.pdfIn PDF document text
    • http://xagewojijakeri.rf.gd/cognitive_distortions_examples_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/83295925106.pdfIn PDF document text
    • http://zasidolejilu.epizy.com/on_my_way_remix_lagu.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_off0000d9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AC 5244 bytes
SHA-256: 8e333d7aa58c5aedec0ff66ffcae8460fa465b70bd98f31ff79d1aeb1648224e
font_01_sfnt_off0000eb82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB82 12860 bytes
SHA-256: edefcb09829894f70e044e413a38cf3d667270f0ca262ac8a2e6b8f39ecf8a84