Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ac11d70e26039a…

MALICIOUS

PDF

76.5 KB Created: 2021-03-01 20:31:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 1ee48a7bfbf74f760cf702487e0a8d2a SHA-1: 239ec6584129d49b95ae69b336f7709b284031f5 SHA-256: e6ac11d70e26039a21dfa59a38db26e21e3f8eaff1983f23994a3b86c2212ad1
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded links, with many pointing to disposable hosting or potentially malicious domains, suggesting a phishing or malware distribution attempt. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm strategy, and the PDF_URI heuristic highlights an external URI that could be part of the lure.

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://seumenha.ru/award?keyword=accu-chek+compact+plus+test+strips+discontinued PDF link annotation
    • https://cdn.sqhk.co/juvebuzizej/igejd2L/liverpool_fc_hd_wallpaper_for_laptop.pdfIn PDF document text
    • https://vudeberas.weebly.com/uploads/1/3/3/9/133997553/3301195.pdfIn PDF document text
    • http://christinaanddavid2019.com/717684643460n6h8.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/I2KajgH/double_dragon_4.pdfIn PDF document text
    • http://vittorguxx.site/487011802181e7hs.pdfIn PDF document text
    • https://bozalofagolukor.weebly.com/uploads/1/3/0/9/130969011/kapebarevoda_dedavopudiz_ximipozalemu.pdfIn PDF document text
    • http://pollsexpert.com/tecumseh_carburetor_adjustmentt5cn7.pdfIn PDF document text
    • https://cdn.sqhk.co/joxopejufito/rNZEheq/65440244586.pdfIn PDF document text
    • https://fejuzewe.weebly.com/uploads/1/3/4/8/134883228/2908619.pdfIn PDF document text
    • https://lokurosafo.weebly.com/uploads/1/3/4/4/134479987/6bc3ea4d800362.pdfIn PDF document text
    • http://hamsterbig.com/xiwaxakafetesorrmy9.pdfIn PDF document text
    • https://fenizivafuno.weebly.com/uploads/1/3/1/3/131380836/pinuvetumesusoreza.pdfIn PDF document text
    • http://watenaz.iblogger.org/mudubadagadutezezipurevo.pdfIn PDF document text
    • https://cdn.sqhk.co/xupumekejaxa/hihijjl/move_to_ios_not_working_oneplus_5.pdfIn PDF document text
    • https://supenavasude.weebly.com/uploads/1/3/5/3/135397397/59136a4e97ebd.pdfIn PDF document text
    • https://bamewubi.weebly.com/uploads/1/3/2/3/132303354/d3b06a6.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/libusamagowuvo/oracle_directory_server_enterprise_edition_administrator_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/galojidol.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/chandrayaan_2_launch_video.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/tazivowitawamumapikudel.pdfIn PDF document text
    • http://kefujuvaw.epizy.com/free_greater_than_or_less_than_worksheets.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_off0000ec7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7E 5396 bytes
SHA-256: 1d646b1dfd55a4a33249f6d64d8a1687fa0d08cc3351d86561d5ef95654729a6
font_01_sfnt_off0000feab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAB 11044 bytes
SHA-256: 88178035ffffa3ea260bcf4ac36d32cbeddbda43b3ef595e081da6c33ceb750c

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