Malicious PDF — malware analysis report

Static analysis result for SHA-256 59115cbd0e7fbc64…

MALICIOUS

PDF

77.9 KB Created: 2021-03-04 06:58:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 187d17c88270b23553eb8531253e4e74 SHA-1: 249c8f51439fb2fbc332d668984f274b1ccb2e5c SHA-256: 59115cbd0e7fbc6401b228d6ea0d8c465b6f391bc34bbd527118cebae70f32aa
126 Risk Score

Malware Insights

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

The sample was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable domains, suggesting a phishing or malware distribution campaign. The presence of PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, indicating the PDF is part of a link farm designed to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/123?utm_term=trane+xl850+humidity+control PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4384821/normal_603fa8ea5000e.pdfIn PDF document text
    • http://sudedelanefozuk.66ghz.com/vehicle_registration_card_telangana.pdfIn PDF document text
    • http://lafovawolifi.22web.org/54164965692.pdfIn PDF document text
    • http://wurilozi.scienceontheweb.net/advanced_excel_course_in_hindi.pdfIn PDF document text
    • http://hh666o.site/the_dream_thieves_summarygvpe0.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/covid_test_delivery_jobs_liverpool.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_603f2e3eaed9e.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/is_hyperbaric_oxygen_therapy_good_for_asthma.pdfIn PDF document text
    • http://nizeguz.iblogger.org/how_does_detox_tea_help_you_lose_weight.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417817/normal_5fc9e05e7aa50.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/90021327587.pdfIn PDF document text
    • http://posiximuteg.sportsontheweb.net/togefufoletoxatat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xajalad.epizy.com/book_learning_python.pdfIn PDF document text
    • http://rimamosapike.epizy.com/ludagixibikasuduxuw.pdfIn PDF document text
    • http://megigezorozo.atwebpages.com/busawegazere.pdfIn PDF document text
    • http://tutunod.epizy.com/43026702517.pdfIn PDF document text
    • http://burafidofa.epizy.com/juwonaw.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_off0000f196.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF196 5580 bytes
SHA-256: 8739b2d9feb0f844e48b00e41bb324d0ce3fc50b3d43a0da96828395d8fcff3c
font_01_sfnt_off00010472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10472 11092 bytes
SHA-256: 1cbe636388d7214ff82f399eee1457ed848388be25087daf51b025f474382425

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