Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb26d582664ea922…

MALICIOUS

PDF

71.6 KB Created: 2021-02-25 12:59:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8e42df12d6b791d9bb5125422f6b2c85 SHA-1: d270979dda5c18c56786b988f3760443d74a9223 SHA-256: bb26d582664ea92246549f59a2bff788df9639573798a305d8d641032018f562
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://leonvi.ru/award?keyword=simile+and+metaphor+worksheet+grade+1 PDF link annotation
    • http://mmeueue.space/inventory_sheet_d_d_5edd2jv.pdfIn PDF document text
    • http://cloudmarket.website/kangertech_evod_vape_pen_instructionswyl28.pdfIn PDF document text
    • http://greenbike.shop/but_and_therefore_ruleiklx2.pdfIn PDF document text
    • http://umdtheatre.ru/refuzasakexonesedotumo0v8g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456369/normal_5fc80b4cc2fa5.pdfIn PDF document text
    • http://keto-s1.com/english_reading_comprehension_test_a2xj7v6.pdfIn PDF document text
    • https://rolobidixogiru.weebly.com/uploads/1/3/1/6/131637372/9317518.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/heMjUoa/cake_art_salisbury_md_prices.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492901/normal_5fe2514b26e09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425909/normal_600cb21f9b652.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/nigimul/schengen_visa_france_application_form_vfs.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/29125594869.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/lotuzazebenazofavisomu.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_off0000da42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA42 5684 bytes
SHA-256: e0865ffca10ac0bb11536659fd7ec7619e575f5cc50d642375657869efa15bd9
font_01_sfnt_off0000ed7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED7B 10468 bytes
SHA-256: d2bec5904599f67c79ef12f234d7ad0980d283e74519e7fbcaf7de593c0e3d3c