Malicious PDF — malware analysis report

Static analysis result for SHA-256 b315066ac01e1795…

MALICIOUS

PDF

65.3 KB Created: 2021-01-26 15:48:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5bdd04af596cd17d8e1556210b4f1178 SHA-1: 82d26704ad829a3b019d62b95a7a2f730a5c7d64 SHA-256: b315066ac01e179538c345b18a57d896d99f4ec427b8e134eca8e2fe3738a0fb
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://druttle.ru/123?utm_term=macbeth+act+3+quote+study+guide+answers PDF link annotation
    • http://umkatrade.ru/22325782393b130y.pdfIn PDF document text
    • https://gubanezuwibudo.weebly.com/uploads/1/3/1/6/131606890/bamiwoge-mopuzexivizaz-fitadedatib-zekazufavizi.pdfIn PDF document text
    • https://kaposabebozof.weebly.com/uploads/1/3/4/4/134466843/1946557.pdfIn PDF document text
    • http://wwwbcpzonasegura-viabcp.com/zeretunwsosh.pdfIn PDF document text
    • https://tivufele.weebly.com/uploads/1/3/4/6/134615601/8680025.pdfIn PDF document text
    • http://iclod.tech/fijotugapenotagavody3h3.pdfIn PDF document text
    • http://galoomer.online/play_tube_e_video_tube_como_baixar3na5t.pdfIn PDF document text
    • http://prizinsta24.site/bubble_spinner_3_gratuit9j6o1.pdfIn PDF document text
    • https://pusiruse.weebly.com/uploads/1/3/4/7/134717846/4051825.pdfIn PDF document text
    • http://prizinsta24.space/kesigerumemaxuwi9rygv.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/8511517789914lsl.pdfIn PDF document text
    • http://atomlinux.com/learn_html_coding_freeq3m8u.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/TIAhfEA/22791031117.pdfIn PDF document text
    • http://stassikorskyi.com/856791757891diyk.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/wovigebi/ruby_blondell_antigone.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_off0000c29e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC29E 5800 bytes
SHA-256: d4e453e019114c14920f9b94eeee0fd06b1705932ff55a5a89b99fdf1c52e47d
font_01_sfnt_off0000d661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD661 9884 bytes
SHA-256: 412d2b5dc5966496041a048cd5b7b8de40a90a26a37c186142465e2c1e77251f