Malicious PDF — malware analysis report

Static analysis result for SHA-256 392bbe3cf1c31006…

MALICIOUS

PDF

79.7 KB Created: 2021-02-18 04:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 698d053f1645570aa406c036ac1389bd SHA-1: 982247f6bcfd32ef87d6bc9d1ec36b61779bcd57 SHA-256: 392bbe3cf1c31006da74cf2334c4d1d293a7d0ab71f5e04ef7c9077d637414fd
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are to suspicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. The primary malicious URL identified is 'https://baarspo.ru/strik?utm_term=what+are+the+native+american+religious+beliefs', which is likely used to distribute further malware or conduct phishing. The presence of embedded PDF links also points to a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/strik?utm_term=what+are+the+native+american+religious+beliefs PDF link annotation
    • https://remurefovedelag.weebly.com/uploads/1/3/1/8/131860204/839051.pdfIn PDF document text
    • https://mipoxijal.weebly.com/uploads/1/3/4/7/134709746/kumefalus.pdfIn PDF document text
    • http://najitop.22web.org/jeweniwefosezufaf.pdfIn PDF document text
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/df7db.pdfIn PDF document text
    • https://pesadoxemanuz.weebly.com/uploads/1/3/4/8/134852899/wariniredoza-vovibanudogiror-zivezurafiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447460/normal_60210c91181f5.pdfIn PDF document text
    • http://xuxuvojetuzutej.iblogger.org/agneepath_poem_whatsapp_status_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413977/normal_602a95d80e5a4.pdfIn PDF document text
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/7441696.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408479/normal_5fe23723545ab.pdfIn PDF document text
    • https://sanokigoj.weebly.com/uploads/1/3/4/8/134863934/4956100.pdfIn PDF document text
    • https://jarivilil.weebly.com/uploads/1/3/4/0/134012847/7389076.pdfIn PDF document text
    • https://pinozawekik.weebly.com/uploads/1/3/4/5/134589254/f22b5c2976.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/zikeko/assembler_plusieurs_adobe_reader.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/94431752563.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/56356781841.pdfIn PDF document text
    • http://sitolomuku.epizy.com/anbe_anbe_movie_song_in_masstamilan.pdfIn PDF document text
    • http://xugonapo.rf.gd/billboard_2018_performances_salt_n_pepa.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/handover_document_template_resigning_employee_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/turimudasixugaw.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/sa_national_lottery-_funding_application_forms.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_off0000fa61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA61 5508 bytes
SHA-256: 7dd0b96974f5e86a900f0dbb524ad987935eb6be0a02ddf7bf09283fee000699
font_01_sfnt_off00010d0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0A 10440 bytes
SHA-256: bb703ad53eb68bda5b54fe93ebea10fbc95aa6e25b3a3f55f1d8193b8260be7a

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