Malicious PDF — malware analysis report

Static analysis result for SHA-256 de6c9a9c6fd27f1e…

MALICIOUS

PDF

73.0 KB Created: 2021-03-05 00:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0ad11546e4b5e4ce8e16713b56b400d6 SHA-1: b5cc91f13723733cc744efdc6fda0a70140cd1f6 SHA-256: de6c9a9c6fd27f1e3fd55ef62ea1b92a65b972f65bfa83884daeeb32d6548fba
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://xajibur.ru/wix?keyword=crash+course+us+history+worksheets+pdf+answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450641/normal_5fc91d7a52a6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406481/normal_603def4994946.pdfIn PDF document text
    • https://kadonomu.weebly.com/uploads/1/3/1/4/131454950/9492847.pdfIn PDF document text
    • https://faturigazed.weebly.com/uploads/1/3/4/8/134859690/6b3197d39f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407081/normal_60349f599e0c6.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/sedoxupiwoduduvo3zgw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415950/normal_600e678e64bf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485927/normal_5ff53bc383348.pdfIn PDF document text
    • https://gojelubimutur.weebly.com/uploads/1/3/1/3/131384605/mepewunal_guburiz_jesigupegibakot_tovivik.pdfIn PDF document text
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/dawif-rovusepivale-levepa.pdfIn PDF document text
    • http://power-guard.shop/kef_r7_test_reviewkhome.pdfIn PDF document text
    • http://bigowet.xyz/86077368932tm1k2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470703/normal_600f77682b072.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cd484a6-71db-4c61-872d-7fb90a187487/the_innovators_dilemma_by_clayton_christensen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b816b261-2576-448c-b5dd-0e69f61b01ae/mugevemuduvefuxiwo.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/phenol_chloroform_extraction_aqueous_phase.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/rekel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c787282-d870-45cc-9b97-572297b03bef/what_is_a_covid_screening.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcd0cc09-5fe7-4ebb-974d-73a5de79c802/the_magic_school_bus_books_genre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a62dc22-c7eb-45ba-b917-061998ac8d08/wozari.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_off0000e010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE010 5376 bytes
SHA-256: 5713609f7b1bcdf7b975dd2f5c0d3f75021cc2d6b22306caa846673de657529b
font_01_sfnt_off0000f269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF269 10448 bytes
SHA-256: dd6ef99c81fd13fdbf7186f7727219a12977062d0b6a138125ed4523f39fc558

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