Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d23547e0173724a…

MALICIOUS

PDF

77.0 KB Created: 2021-03-21 09:03:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d163628feb24799f3c0470ffb5ec31a4 SHA-1: 236538a6521cf3abd4953d6faa58f586e1fee934 SHA-256: 2d23547e0173724a5d4872efbb4b642a0a8d16159b1c14f85c616477e73c2edc
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malicious redirection attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://leonvi.ru/wix?keyword=mgm%252Fua+home+video+logo+effects PDF link annotation
    • http://moymagazin.xyz/historia_de_mexico_prehispanico_resumenuh1qk.pdfIn PDF document text
    • http://usesucre.pro/ditelixugevabumebogezajasjpmeu.pdfIn PDF document text
    • http://manamuketamas.22web.org/divaluxomamofuketasi.pdfIn PDF document text
    • http://sosutisokalelul.iblogger.org/wiwofigofojotur.pdfIn PDF document text
    • http://makamar.online/30324087886oi0d5.pdfIn PDF document text
    • http://mantenancie.com/que_hace_un_lider_espiritualeb4p2.pdfIn PDF document text
    • http://creditstar-kabinet.com/blackmagic_atem_television_studio_pro_hd_tutorial69nc0.pdfIn PDF document text
    • http://kasaxalelari.iblogger.org/the_art_of_war_summary.pdfIn PDF document text
    • http://reabook.online/free_product_brochure_design_templatevchtc.pdfIn PDF document text
    • http://lazadacostumercenter.com/tozironiloxrfg0d.pdfIn PDF document text
    • http://avit0.cc/xevejozilonevodutupil0psg0.pdfIn PDF document text
    • http://rent-nout.site/fl_studio_12_free_download6oepx.pdfIn PDF document text
    • http://ruwaxidalemib.iblogger.org/convert_base64_to_blob_javascript.pdfIn PDF document text
    • http://maska-respirator.com/former_american_embassy_ho_chi_minhvcvev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ea68875-b48e-4b3b-8aa2-b3b4aafad586/zikavaxajumirobixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d2fbbb5-13ea-441b-b2a3-9d2a34b8637e/44124458268.pdfIn PDF document text
    • http://sisurafuza.epizy.com/83061150339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/770921e4-9fd3-46a7-8d58-8fe49d2dac42/la_estructura_del_texto_informativo_es.pdfIn PDF document text
    • http://tavapoz.rf.gd/al_quran_apk_untuk_laptop.pdfIn PDF document text
    • http://julisumuxolo.rf.gd/bamutojofireraxunamiga.pdfIn PDF document text
    • http://todonoto.epizy.com/medarozanagoje.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_off0000eff4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF4 5440 bytes
SHA-256: 3abf4fdd9f3569a945c7c45b54b7ee7cd1a1540a173f7c56d8bd9b2cf33592bb
font_01_sfnt_off00010275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10275 10684 bytes
SHA-256: c23caa4462babda7800c0929737ebae1491fa531ed9a444329abae98cb2b6a9e

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