Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac4ce44560b8fb4…

MALICIOUS

PDF

70.6 KB Created: 2021-03-03 11:03:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: e7267381343b2807fae78d41aecffe39 SHA-1: 8685be93f7b92562f22fbf80a99d0ab71c907e7f SHA-256: eac4ce44560b8fb4c8fd774a07a4ccc6272161062b8e06813732cab585baed8b
126 Risk Score

Malware Insights

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

The PDF file contains multiple external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the overall structure point towards a phishing lure disguised as technical documentation.

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://baarspo.ru/strik?utm_term=swann+dvr8-4575+hard+reset PDF link annotation
    • http://skidki-day.store/how_to_find_the_magnitude_of_gravitational_forcejfh1y.pdfIn PDF document text
    • http://hookup153.fun/jrcalc_clinical_practice_guidelines_2019hgvux.pdfIn PDF document text
    • https://cdn.sqhk.co/wareberefiz/kyliiTE/58064337210.pdfIn PDF document text
    • http://mstmail.space/boo_monsters_inc_moviecg6j5.pdfIn PDF document text
    • http://pelistens.xyz/2012_jeep_grand_cherokee_service_man5hlex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458633/normal_5fd6fedc6c92e.pdfIn PDF document text
    • https://cdn.sqhk.co/dagosasojo/hahezhh/emergency_contacts_list_template.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487419/normal_5fc5bf46904c7.pdfIn PDF document text
    • http://prognoz-football.club/what_is_the_best_salad_dressing_for_losing_weight8xiyr.pdfIn PDF document text
    • http://legiontry.online/sibibizemovo5egug.pdfIn PDF document text
    • http://all-gopro.com/administracion_financiera_fundamentos_y_aplicaciones_oscar_leon_garcia_gratisup5ws.pdfIn PDF document text
    • https://cdn.sqhk.co/xadeviro/h7gfnHk/pibonifesokafabunamemepom.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/Lhagf1R/diy_woodworking_projects_easy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386606/normal_6037421adbb5a.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/xarojapi/wutepuduvarakatorir.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/99838523509.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/html_and_css_templates_with_source_code_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/us_check_account_number_format.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/my_airtel_postpaid_bill.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_off0000d6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D2 5656 bytes
SHA-256: fe810b7167e0e124e7f6151fd27644fddac2d90051eb26e522ab4729db9e693a
font_01_sfnt_off0000ea3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3B 10184 bytes
SHA-256: 783ac41093b1783bb4b91249efd392ac7f10e4be655bd55c47f6d64b2e758d10

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