Malicious PDF — malware analysis report

Static analysis result for SHA-256 d97826cd4bca995c…

MALICIOUS

PDF

71.7 KB Created: 2021-02-26 04:23:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4ad8f8a8cb84406b7e434549bc965696 SHA-1: ce2d47b61e7ca0e5677bc76edd149fff9b20a5e6 SHA-256: d97826cd4bca995c5732cc0d30b60fb24d6fb17b07481eade28365b62ad720ab
184 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
  • 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.
  • 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.
  • 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://crophysi.ru/award?keyword=how+to+remove+pimple+spots+at+home In PDF document text
    • http://palejep.22web.org/video_player_apk_android_2._1.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/bebivudokujida.pdfIn PDF document text
    • http://electorat.org/ods_graphics_editor_sas_9.48sawl.pdfIn PDF document text
    • https://muvesajaduxu.weebly.com/uploads/1/3/4/0/134012660/57fb2bdb.pdfIn PDF document text
    • https://cdn.sqhk.co/febenanedibu/hh6rqji/85500924639.pdfIn PDF document text
    • https://cdn.sqhk.co/kelopifagisu/a9gihgg/wawitozifalusojebol.pdfIn PDF document text
    • http://virnet77.ru/dininotegokolawp93f.pdfIn PDF document text
    • https://cdn.sqhk.co/nejijilo/2hawggl/battlefield_play4free_2020.pdfIn PDF document text
    • http://info-pages.ru/age_of_empires_2_the_conquerors_expansion_cheatsnv54x.pdfIn PDF document text
    • http://rijupoxog.22web.org/rajakaliamman_songs_masstamilan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://buvumitibeve.rf.gd/fibiz.pdfIn PDF document text
    • http://vujuvisesakok.myartsonline.com/jidizenif.pdfIn PDF document text
    • http://donijexufenu.onlinewebshop.net/natada.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/navien_240a_dip_switches.pdfIn PDF document text
    • http://zuluduk.epizy.com/mojopubaneve.pdfIn PDF document text
    • http://gonesipida.epizy.com/gixumanoguxoz.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_off0000def5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF5 5172 bytes
SHA-256: e6b4ea9009da99ba244f410865250f90e8e7fcd60b2c2fd4734682c878ab8f33
font_01_sfnt_off0000f06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF06F 9796 bytes
SHA-256: 59b5cf07840f56500d354e11c543c25cd25f12f4a96240eb51d43e72c0db591a