Malicious PDF — malware analysis report

Static analysis result for SHA-256 607e091223b38cc4…

MALICIOUS

PDF

75.1 KB Created: 2021-03-03 09:06:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2361e59c00bd39bbf5a40e7cb06d0c5f SHA-1: 74ac3d7db46cee17a58a7bd1898efcc0881f4948 SHA-256: 607e091223b38cc4809b7f19bf99d415c468ef88ec1fc471198ca39321f81ee5
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://dafemum.ru/award?keyword=how+to+put+bobbin+in+singer+talent In PDF document text
    • http://zeropium.com/cuntos_tipos_de_funciones_cuadrticas_hayymdex.pdfIn PDF document text
    • http://fastcreditcheck.info/aishwarya_movie_songs_kannadaz5e61.pdfIn PDF document text
    • http://bulakirip.getenjoyment.net/weka_practical_machine_learning_tools_and_techniques_with_java_implementations.pdfIn PDF document text
    • http://watercart.ru/87840176713g6j0b.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/macmillan_english_worksheets_for_grade_7et429.pdfIn PDF document text
    • https://jurujixomegisi.weebly.com/uploads/1/3/4/7/134745805/guximofa.pdfIn PDF document text
    • https://xogefuvoza.weebly.com/uploads/1/3/2/3/132303221/nixexaxatud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374696/normal_5fdbdea348942.pdfIn PDF document text
    • https://fosegeluka.weebly.com/uploads/1/3/4/7/134717840/ee7a97bca.pdfIn PDF document text
    • http://legko.travel/bevabopuziyds3v.pdfIn PDF document text
    • https://nifusesoporiw.weebly.com/uploads/1/3/5/3/135309858/6360274.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379733/normal_5fd664a04e66f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://moxutomib.rf.gd/dulomelawul.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/connect_italian_avanti_answers.pdfIn PDF document text
    • http://gutezapirasawad.rf.gd/cancer_de_mama_gpc_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/lufaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/kenexawedum.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/content_plan_template_excel.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_off0000eac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC6 5180 bytes
SHA-256: c322268f3cfb8e0aa8071002e127eefaea9bcb3d8d44de5f65e2c4a08f78ed03
font_01_sfnt_off0000fc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC81 10240 bytes
SHA-256: 66ce7c7ce8e9cf15cbc1e381ec5c4a2abf8abea862a03a64516af7d626eb8cca

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