Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec663cb29a19211…

MALICIOUS

PDF

78.8 KB Created: 2021-02-25 18:57:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a45d63535ffac4aa470407b89a78a8ba SHA-1: 295a8b9729357707454cf5de2c7bd2f5d741ba4d SHA-256: bec663cb29a19211e04df1a04601f1e8f2c2eb69b4fee9535e2e1e7ca8c9f66a
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards a malicious document designed to redirect users to potentially harmful websites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/strik?utm_term=wahl+cordless+clippers+reviews PDF link annotation
    • http://helper-badges.com/605022864066umpy.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/c6icpid/josorotuvo.pdfIn PDF document text
    • http://floradoma.net/347233043847dvhq.pdfIn PDF document text
    • https://cdn.sqhk.co/wifukatar/dgcunhc/chemical_element_table_in_chinese.pdfIn PDF document text
    • https://gofuzuxelizexo.weebly.com/uploads/1/3/5/3/135391542/vezexowomuzokuruloso.pdfIn PDF document text
    • http://todayshop.website/lasubulorimelajapovowusupj4.pdfIn PDF document text
    • https://zedowegekinusil.weebly.com/uploads/1/3/3/9/133997302/bezaro_ramewil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480897/normal_60377fb2af59f.pdfIn PDF document text
    • https://rifojiditesi.weebly.com/uploads/1/3/1/3/131379396/wotelivov-fagabirakiduvaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473916/normal_60197559441aa.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/nOge1UZ/41030409526.pdfIn PDF document text
    • https://tedarotola.weebly.com/uploads/1/3/1/4/131482933/vafidisiberobo_subokorisabi_zesotovuza.pdfIn PDF document text
    • https://cdn.sqhk.co/tijanukubo/fpjhibO/34428114553.pdfIn PDF document text
    • https://dovenokitumenu.weebly.com/uploads/1/3/1/4/131482991/4ceb653246323e.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/7jejcR6/iggy_biggy_piggy.pdfIn PDF document text
    • http://itwomen.space/printer_brother_mfc-_t810wtxlht.pdfIn PDF document text
    • https://cdn.sqhk.co/sikudile/fggttqr/tik_kik_app_which_country_made.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f6ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EE 5328 bytes
SHA-256: 9f72f9c5ca22d287d8d4ca6f313e38beda0ed77f827d3b7b7e0ee2ccc8a227d1
font_01_sfnt_off00010920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10920 10848 bytes
SHA-256: bf9b3ab7b773bf3e0f5a61cfb76949f1bf655a5c1c8be18f2434cd479c5c1198

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