Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eb26930facc800e…

MALICIOUS

PDF

72.8 KB Created: 2021-02-16 02:00:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 90c6a467667eb0b5d49a60749554629a SHA-1: e5e2936c008251339fa6fd6236a0e4ff0f4b55e8 SHA-256: 4eb26930facc800e94e94e47c6b22e176c5ac23afec58b1294c908ff5069774c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/wix?keyword=doom+unblocked+games+77 In PDF document text
    • http://sodazetibup.iblogger.org/burger_republic_nutritional_information.pdfIn PDF document text
    • http://jajuwupi.22web.org/pilajitilinevinujoduxikoj.pdfIn PDF document text
    • http://sidikapefujuxe.22web.org/fotunevumubigikopagubexi.pdfIn PDF document text
    • http://wabukuxinezu.22web.org/88310922701.pdfIn PDF document text
    • http://menazubuta.iblogger.org/65824451095.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475216/normal_5fd2cfc0a213b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459780/normal_5fcd1aff2b38f.pdfIn PDF document text
    • http://123dutch.com/78331324538t84k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383681/normal_60175506de357.pdfIn PDF document text
    • http://linogozajasupe.22web.org/breathing_apparatus_set.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487622/normal_5ffba5e81eb2f.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/paxivogedewilu/cara_mendapatkan_vsco_fullpack_gratis_android_2018.pdfIn PDF document text
    • http://tilixufevoj.epizy.com/69998351821.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/5134966684.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/new_york_state_franchise_tax_report.pdfIn PDF document text
    • http://wulitebajanuba.rf.gd/bivariate_uniform_random_variable.pdfIn PDF document text
    • http://kosuvoz.epizy.com/fraser_river_sturgeon_guides.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_off0000dc63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC63 5448 bytes
SHA-256: 265cbc680c369a8df31a85201818ed316c974120a5288db1bbf86adb1c882c0b
font_01_sfnt_off0000eee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE3 11740 bytes
SHA-256: 6ec8db0da095748340e03376cefb5ae6c1c00c53764725a4d206358880311e9d