Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f513def470fef44…

MALICIOUS

PDF

69.6 KB Created: 2021-02-28 08:05:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 491d438dbd2c62ddc9a676e874c587d0 SHA-1: adf26e110b6fa1363833742f47a81ba78ef7f5b5 SHA-256: 5f513def470fef44d1b47783cfe05c5ad5de939d1185109bb1c283d397981a8e
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://mezovuduw.ru/wb?keyword=how%20many%20days%20until%20my%2016th%20birthday PDF link annotation
    • https://xafukulirodut.weebly.com/uploads/1/3/1/3/131379356/03cf148.pdfIn PDF document text
    • http://mgacessoria.online/yiruma_kiss_the_rain_violin_sheet_musicrk1k7.pdfIn PDF document text
    • https://supagerafigi.weebly.com/uploads/1/3/0/8/130874211/3421576.pdfIn PDF document text
    • https://midusafamiriron.weebly.com/uploads/1/3/4/7/134702540/eccdb9047f60.pdfIn PDF document text
    • https://nelizozab.weebly.com/uploads/1/3/0/8/130874358/1451445.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/91041837730.pdfIn PDF document text
    • http://kernig.online/nufevuranubexanusadusoftq6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nelivizazepafo.epizy.com/kedobe.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/wukudajekof.pdfIn PDF document text
    • http://mebewoxesare.epizy.com/wells_fargo_report_stolen_checks.pdfIn PDF document text
    • https://s3.amazonaws.com/paxunu/84785174226.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/reforma_religiosa_anglicanismo_resumo.pdfIn PDF document text
    • http://nifagusimesizi.epizy.com/gitijixo.pdfIn PDF document text
    • http://kaduxatij.epizy.com/ring_bound_index_cards_100_sheets.pdfIn PDF document text
    • http://kuporalegumema.epizy.com/journaux_algeriens_en_a_telecharger.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_off0000d3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D6 5568 bytes
SHA-256: dd068f2fe99131c0346524a14addade5a1a7401d3bf0fc5a19741c52153e3755
font_01_sfnt_off0000e6a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A8 10284 bytes
SHA-256: c35f3cfe086753eb7c9308c7edbfcf38040b5ab24f8d792ae3c1cb045adc2d59