Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1079af495266bff…

MALICIOUS

PDF

70.4 KB Created: 2021-03-06 13:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: aeb84be9980255dbae4a2d3c32219626 SHA-1: 7cba37e75938d764f50a259aa51419a40f2ba95f SHA-256: d1079af495266bff8d907148604798744f2907b7c5059606ec70ce60bf278a91
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://zajinet.ru/award?keyword=riello+burner+motor+wiring+diagram PDF link annotation
    • https://xalitive.weebly.com/uploads/1/3/4/3/134320973/xezonokovafu_bunawim_xokuw.pdfIn PDF document text
    • http://vezapom.iblogger.org/sony_android_tv_apps_update.pdfIn PDF document text
    • https://zemonawajut.weebly.com/uploads/1/3/4/6/134688337/3586573.pdfIn PDF document text
    • https://vadiwolor.weebly.com/uploads/1/3/4/7/134737839/ribakibuwamona.pdfIn PDF document text
    • https://tezijiso.weebly.com/uploads/1/3/4/6/134690371/gitij.pdfIn PDF document text
    • https://feronokemafa.weebly.com/uploads/1/3/1/1/131164109/letufovumo-nibimumidizina-namulanew-kejebi.pdfIn PDF document text
    • https://zupipozove.weebly.com/uploads/1/3/4/5/134589893/kerofaramoragogifib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_ee8e3cdf861e4e10b9c895d7151d1a5b.pdf?index=trueIn PDF document text
    • http://pazixurofuni.epizy.com/5856695126.pdfIn PDF document text
    • http://nepogewapiw.epizy.com/10114324454.pdfIn PDF document text
    • http://rebobimakefeli.epizy.com/77129433912.pdfIn PDF document text
    • http://napilidowolaro.rf.gd/is_chick_fil_a_mac_and_cheese_good.pdfIn PDF document text
    • http://buwepuxaj.epizy.com/genogram_template_uk.pdfIn PDF document text
    • http://delupujak.epizy.com/27918016757.pdfIn PDF document text
    • https://ca483b97-61ac-4196-bca0-6b249c18eca9.filesusr.com/ugd/b27199_627c4d2eeae34f72a05d4ad77fc96434.pdf?index=trueIn PDF document text
    • http://xazabivi.epizy.com/acrobat_reader_pc.pdfIn PDF document text
    • http://fazotubirawotal.rf.gd/foripemubomadifigetuk.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_off0000d713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD713 5208 bytes
SHA-256: bbb8def383db852baefad49d21d57ca7235cec6dd03556655618ca97cb3dc46a
font_01_sfnt_off0000e8c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C2 10368 bytes
SHA-256: 0484991b1b2a04dfe886163c05fc2ae41bc2ad01cdb2c56945ffeb60d5b0a3e0