Malicious PDF — malware analysis report

Static analysis result for SHA-256 45033c3799985788…

MALICIOUS

PDF

77.9 KB Created: 2021-03-22 11:21:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 94f2023ed0ed798bce25f1e977f7c051 SHA-1: be1ab58a951fe20985c14e71fac391688b2bcdee SHA-256: 45033c37999857888db87f150e1bac43329010c1af8e6cc725ec8df642d49739
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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://soxebez.ru/strik?utm_term=calculadora+de+conversion+de+mililitros+a+gramos PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408462/normal_5fcfac1245d38.pdfIn PDF document text
    • http://rusakadovub.sportsontheweb.net/gepetemot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443610/normal_5fda6a498d61e.pdfIn PDF document text
    • http://tularafujebok.iblogger.org/26090748627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465924/normal_60580f2737d3a.pdfIn PDF document text
    • http://peromopativej.mypressonline.com/kabizeri.pdfIn PDF document text
    • https://cdn.sqhk.co/mibemofega/Ajhjehh/jomubasexoruvudepubu.pdfIn PDF document text
    • http://jixazepo.mywebcommunity.org/traxxas_tqi_transmitter_reset.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371809/normal_5fe9f7e3e876f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5fe9804845ec8.pdfIn PDF document text
    • http://kexedeziferu.sportsontheweb.net/seliwolekixajaguwitu.pdfIn PDF document text
    • http://tujijamutibe.sportsontheweb.net/how_do_you_remove_a_stuck_tupperware_lid.pdfIn PDF document text
    • https://cdn.sqhk.co/wusuzevomo/X2hdjiq/podoxegogalukixelifusegob.pdfIn PDF document text
    • http://legovimoz.iblogger.org/xosirepubozetaxut.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/dogevazapiwediw/candidiasis_oral_tratamiento.pdfIn PDF document text
    • http://lajuwojuwel.epizy.com/practical_database_programming_with_visual_basic.net.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/boxulul.pdfIn PDF document text
    • http://lajirino.rf.gd/zemusekonobodarasizemazi.pdfIn PDF document text
    • http://pabotojixupi.atwebpages.com/thanksgiving_themed_table_topics_toastmasters.pdfIn PDF document text
    • http://sutexuvidag.myartsonline.com/como_nao_descascar_do_sol.pdfIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/guvafodupulefox.pdfIn PDF document text
    • http://wurasegato.rf.gd/anova_sous_vide_cookbook.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eec8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC8 5224 bytes
SHA-256: 4f574c1fbd1d51feaee3a51c35ce583eb473c80ccd0267279ff944e406a86e41
font_01_sfnt_off00010078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10078 12836 bytes
SHA-256: 05886173d875809eef9594f06c4a4607bb9336ce97d67e3e1fc316df79876ef3

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