Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0e5c5c6a8e2a45…

MALICIOUS

PDF

68.9 KB Created: 2021-02-28 17:42:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9a6871a1ed064fa9b74472ba6936d66c SHA-1: 7cc8754dd130170af29ff4e837d8890a55d8cd5e SHA-256: 2b0e5c5c6a8e2a453eda9b6ef98fe52171fd7dae66030e6384d9bfc98cb7ddad
184 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
  • 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://yafferge.ru/award?keyword=how+to+use+a+hebrew+lexicon In PDF document text
    • http://cybety.xyz/jokupunelagx0rlp.pdfIn PDF document text
    • http://cosmostil.top/epidemiologia_clinica_fletcherslax2.pdfIn PDF document text
    • http://basiditdcf.space/engineering_optimization_textbook6pmpk.pdfIn PDF document text
    • http://petrol-v-pol-price.site/mumanorujogijusexoxuramucm0yu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479923/normal_5fd7c0c488c72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411273/normal_5ff9f0447454f.pdfIn PDF document text
    • http://mafaregasinuviv.22web.org/game_guardian_8._2._1_apkpure.pdfIn PDF document text
    • http://net-klientov.ru/how_to_use_a_presto_food_dehydratorm19r0.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/87952804765yph20.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/kodipopujufipig/56581034016.pdfIn PDF document text
    • http://pazoluno.epizy.com/annual_report_of_hindustan_unilever_limited_2018.pdfIn PDF document text
    • http://tudibakigar.epizy.com/kafura.pdfIn PDF document text
    • http://xejarejunap.rf.gd/archived_conversations_android.pdfIn PDF document text
    • http://dujabonesisu.rf.gd/is_the_dmv_in_niagara_falls_ny_open.pdfIn PDF document text
    • http://rokabimokow.rf.gd/company_profile_sample_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/45331210327.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_off0000cd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD94 5148 bytes
SHA-256: c6988fa66c4680430e35ecaaed6d128cd6b565163e88a1135869f3665c6521e2
font_01_sfnt_off0000df22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF22 11236 bytes
SHA-256: a9acd76242ff5f0104afec9a5234425efebf08ef87666b0aa2fc28dca8d0dbee