Malicious PDF — malware analysis report

Static analysis result for SHA-256 12af50449c8b6bc0…

MALICIOUS

PDF

86.0 KB Created: 2021-02-14 09:11:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 9881b8552b278318ea062b2d7ad0ad79 SHA-1: 88dc69d71c02e1800ecb88a89f6db432a0bbf1f7 SHA-256: 12af50449c8b6bc0311ece94a39ff2e0eea6ff09ae92b390be595b3c36b1ce81
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/wb?keyword=attraction%20movie%202017%20%20in%20english'. This URL is presented in a way that suggests it is a search result, aiming to trick the user into clicking it. The ML classifier and ClamAV also strongly indicate maliciousness, consistent with a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/wb?keyword=attraction%20movie%202017%20%20in%20english In PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_60285aa5dfd2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457302/normal_5fdff43e8828d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481400/normal_60069b37bf3e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491450/normal_6021653fe99ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468530/normal_601a386acccba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394079/normal_601b1f890d9e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391008/normal_601b858a87439.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403415/normal_5ff085a236e08.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453333/normal_5fe3c53db57f5.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/vuraradaso/46576823434.pdfIn PDF document text
    • http://fofifalog.rf.gd/32269778389.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/basics_of_excel_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/lunowunabokarepavewer.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/wopado.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/birthday_party_flyer_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/chahun_main_ya_na_mp4.pdfIn PDF document text
    • http://mevililuxe.epizy.com/sumojigaxegeze.pdfIn PDF document text
    • http://dadagax.epizy.com/ieee_report_reference_format.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/chemfiesta_balancing_equations_practice_worksheet_answers.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_off0001057b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057B 5668 bytes
SHA-256: 9177611452f90aa38ee18945ed9193610c2073db146a5c3015dffaa58d413619
font_01_sfnt_off000118a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118A6 16516 bytes
SHA-256: efc5554267c905f364900ba9c501c13907ebb413aab9783ba0bf355269366515

Open this report in the interactive analyzer, or submit your own file for analysis.