Malicious PDF — malware analysis report

Static analysis result for SHA-256 20a9b13042d8f659…

MALICIOUS

PDF

71.2 KB Created: 2021-02-25 16:16:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 400bdf644572edaf1284460443322da8 SHA-1: 5c66666a70c189e8f3f730cfeaf0b24034c3ce41 SHA-256: 20a9b13042d8f659402a1b7c735b578b536241e8bd4b0e2fac317d135c3c1fe8
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/award?keyword=kirkland+signature+ham+glaze+instructions PDF link annotation
    • http://dorulezebum.sportsontheweb.net/16317731724.pdfIn PDF document text
    • http://vereffka.xyz/91867080554o4twx.pdfIn PDF document text
    • https://saletenabij.weebly.com/uploads/1/3/4/3/134339554/948366c1.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/tatumunakadefidixevo.pdfIn PDF document text
    • http://wonnaturila.space/xuxisoxitfg6m2.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/how_to_clean_swiffer_wet_jet.pdfIn PDF document text
    • http://wuvolubevozobo.iblogger.org/dividing_complex_numbers_worksheet_with_work.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/37363893678.pdfIn PDF document text
    • http://1cats.space/jefozumudalikaxu8vd41.pdfIn PDF document text
    • http://naturfresh.space/honeywell_barcode_scanner_programming_guidesnq8r.pdfIn PDF document text
    • http://iwhite.space/86284976782bqrua.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/degisapemifa/dijozezupujule.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/chicago_manual_of_style_capitalize_earth.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/7748060442.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_off0000da65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA65 5436 bytes
SHA-256: 3108550e80ee3df43290db20f45d6f93c94c7ca45fccde694123dc6aa13dc616
font_01_sfnt_off0000ecc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC0 10368 bytes
SHA-256: fa954e36ed221392450a7500c8018b2eca8f79e92a50276091597eedacc9e87b