Malicious PDF — malware analysis report

Static analysis result for SHA-256 20c07ceb65e771f2…

MALICIOUS

PDF

72.3 KB Created: 2021-02-21 01:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 562a5dcfc37c8f804451d6470d009cae SHA-1: 83cc113662170aa55b7ae121dfbfb481fa00801f SHA-256: 20c07ceb65e771f21882ce2688435120059ed75ba994677fe304c10c9aec669c
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and is flagged as a link farm, suggesting it directs users to potentially harmful websites. The presence of embedded URLs and the PDF structure point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/wix?keyword=marisa+paredes+joven PDF link annotation
    • https://cdn.sqhk.co/datawafag/he4zJia/36882866194.pdfIn PDF document text
    • http://drovazvenigorod.ru/xinomokum4gxmz.pdfIn PDF document text
    • https://cdn.sqhk.co/gabisolovima/fidiexk/smart_sync_cloud_storage.pdfIn PDF document text
    • http://salonop.xyz/how_do_i_add_apps_to_a_samsung_smart_tv0f5un.pdfIn PDF document text
    • http://lisipezasuk.iblogger.org/gokinerozojowazem.pdfIn PDF document text
    • http://libralab.digital/96453030968279z1.pdfIn PDF document text
    • http://bachanalytics.com/nixadigegokopclkjy.pdfIn PDF document text
    • https://cdn.sqhk.co/vonirosidejo/gjdxuTE/end_yaariyan_all_song.pdfIn PDF document text
    • http://lbaranaydin.com/32135673480nl8yb.pdfIn PDF document text
    • http://yandex-dostav.ru/4420034059qmrms.pdfIn PDF document text
    • http://vekvelo.ru/kumenorefma564.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poxemibusap.epizy.com/74463158775.pdfIn PDF document text
    • http://sosefamip.epizy.com/muscle_building_calisthenics.pdfIn PDF document text
    • http://mupelaj.rf.gd/geduwadenaluxidor.pdfIn PDF document text
    • http://lujuxug.epizy.com/fowuzizefopezuputuluje.pdfIn PDF document text
    • http://nupepepasis.rf.gd/cisco_encs_5412_data_sheet.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_off0000e081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE081 5060 bytes
SHA-256: 0685810a7739e4284c62d93cad2340e27e77939ff221facb84b7a4f848991c18
font_01_sfnt_off0000f1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DC 10148 bytes
SHA-256: 630dd13f680f28c700d0cbb1f27d92c35bb3c1792b6586e411486bc402b39354

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