Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c9526ab09049420…

MALICIOUS

PDF

90.3 KB Created: 2021-04-30 21:43:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 53f9903cb47ed5143805dff61a370ff4 SHA-1: d650a506fa6945454d05502bce3c7591abb88d2b SHA-256: 9c9526ab090494204cf78b17ecb72b6fd4ecf6f02291b7e298a483bad70ea7fd
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the PDF structure indicate an attempt to redirect users to potentially harmful external content, likely for SEO manipulation or to host further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://botokaw.ru/strik?utm_term=can+you+get+a+black+and+tan+jack+russell PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413362/normal_60270e39679fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411490/normal_606b323ea7c21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461744/normal_6014e3f589ad6.pdfIn PDF document text
    • http://sipipewawezizuf.getenjoyment.net/3560133961.pdfIn PDF document text
    • https://vonefemupeme.weebly.com/uploads/1/3/5/9/135957005/7554786.pdfIn PDF document text
    • https://vakogiguwowokel.weebly.com/uploads/1/3/0/7/130775334/616830.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/ghjCFMw/jekulezepilivitefasijuvo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388428/normal_5fec92431e9bd.pdfIn PDF document text
    • https://cdn.sqhk.co/fiporalisu/ghicyid/free_stuff_on_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/jotoselu/hUOjc1a/warpage_definition_in_chinese.pdfIn PDF document text
    • http://tapopapebesawu.getenjoyment.net/92635529017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416495/normal_60598b526a351.pdfIn PDF document text
    • https://cdn.sqhk.co/lebudawojafi/haMYvr0/posupeka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459914/normal_60246c7015d1f.pdfIn PDF document text
    • http://tapopapebesawu.getenjoyment.net/64132734757.pdfIn PDF document text
    • https://nodepuje.weebly.com/uploads/1/3/4/5/134518199/ab452cc5e.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/gfsgj5c/learn_python_the_hard_way.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuberifanarov.rf.gd/tetibekaleridilu.pdfIn PDF document text
    • http://lowefukoxoxegab.epizy.com/how_to_sew_a_rag_quilt_for_beginners.pdfIn PDF document text
    • http://gapefixuwaxa.epizy.com/waybill_template.pdfIn PDF document text
    • http://bapaxofobawob.rf.gd/72672740474.pdfIn PDF document text
    • http://zilowovuv.atwebpages.com/95430141753.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_off0001224f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1224F 5396 bytes
SHA-256: 76d89a84bcd26b26bf9fc91acc35600c1fa12f1c95b1f0ca77bc4e76298dd030
font_01_sfnt_off000134c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134C1 11372 bytes
SHA-256: c4f75c98f3a65fa5981ab1a5b68e0d2fb80d9a5872687ada15b339d80f5475a9

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