Malicious PDF — malware analysis report

Static analysis result for SHA-256 04c6024c70f29ddc…

MALICIOUS

PDF

80.9 KB Created: 2021-03-23 22:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 46d1b36625521c7d1a415b03b2fb4339 SHA-1: d3cd96d8d68cb0f6896aff01dcfadf79423c5733 SHA-256: 04c6024c70f29ddc9d127b303b97c4add19938993e4ed1cd62bf5f1143d285a7
126 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a URL related to configuring a Netgear switch, suggesting a lure. The presence of multiple external URIs, some hosted on disposable domains, further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/strik?utm_term=how+to+configure+a+netgear+switch PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4391909/normal_5ff343dfdc6fc.pdfIn PDF document text
    • http://seviregigaguz.22web.org/69637950965.pdfIn PDF document text
    • https://cdn.sqhk.co/bidekidarub/MifNOgg/water_slides_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/8hcicBW/31273854052.pdfIn PDF document text
    • https://cdn.sqhk.co/pirasemofoge/fJiigfs/mysejahtera_hotspot_tracker_not_working.pdfIn PDF document text
    • http://sijemogezabusa.sportsontheweb.net/pride_and_prejudice_2014_mini_series_watch_online_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446925/normal_603264240fd12.pdfIn PDF document text
    • http://dizotegi.iblogger.org/wazupogixibodurodifiselar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374013/normal_5fe973a6b8bb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409098/normal_5fdc26697fdc6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://niginikixino.epizy.com/vebuletezosisunalupir.pdfIn PDF document text
    • http://mijovutotukedes.onlinewebshop.net/c_cheat_sheet_advanced.pdfIn PDF document text
    • https://56db2a4d-09ce-4ff6-a558-abb1d6727cd4.filesusr.com/ugd/003b86_44e74f01986342b19a80f423180cadb1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/najubu/27510530512.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/shapes_and_colours_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/polycom_vvx_410_phone_warning_icon.pdfIn PDF document text
    • http://juwukopegonamu.onlinewebshop.net/72715402446.pdfIn PDF document text
    • http://tulinavosubod.rf.gd/51367029026.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/luzisig.pdfIn PDF document text
    • https://1dab3517-3db0-43ff-9fd6-b65b51f65b60.filesusr.com/ugd/565485_6a95e7ec8b7b428eb436b1d32e5b3da2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/kililodazafobebakufupaza.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_off0000fe5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5A 5164 bytes
SHA-256: 2a8424231d86623722ce138104f4e1be4b95901d193fe83c7fd26c50c89c5a57
font_01_sfnt_off00010ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FFD 11316 bytes
SHA-256: b252b7c6eee0e367923eada3c5827b3101cd313dd5dba91df63b175ae0a3b9ed

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