Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb092eca03d82cc…

MALICIOUS

PDF

105.2 KB Created: 2021-03-17 15:49:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: d980da26ea0928251d0a9ac1c9fa94a4 SHA-1: b0c7f95f5bb31252ee67faa8b798f4352061d4a2 SHA-256: beb092eca03d82cc87a09b792f91591dffb82a0db640bcb13bab91de909ddb42
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that point to suspicious domains, identified by heuristics as a link farm and potentially malicious. The ML classifier and ClamAV detection strongly indicate malicious intent. Although the document body is heavily obfuscated, the presence of external URIs and the overall detection suggest this PDF is designed to redirect users to malicious sites, likely for phishing or to download further payloads.

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://maypoin.ru/award?keyword=analytical+research+and+development+pdf PDF link annotation
    • http://gofadivus.mygamesonline.org/gafosavakexalawodeliwad.pdfIn PDF document text
    • http://gagimubu.mywebcommunity.org/vosadi.pdfIn PDF document text
    • https://tupemewona.weebly.com/uploads/1/3/0/7/130775182/babanajegin_zukivexi.pdfIn PDF document text
    • https://donodofi.weebly.com/uploads/1/3/1/8/131856097/zifonobuzezozoz.pdfIn PDF document text
    • http://pibarulajido.getenjoyment.net/gaxot.pdfIn PDF document text
    • https://lonunirixug.weebly.com/uploads/1/3/2/7/132710494/larabe.pdfIn PDF document text
    • http://pobadabodoz.scienceontheweb.net/read_books_online_free.pdfIn PDF document text
    • http://derilezin.sportsontheweb.net/what_is_the_disney_college_program_looking_for.pdfIn PDF document text
    • http://matteset-spon.space/survivalcraft_2_download_free_android2qpoi.pdfIn PDF document text
    • https://tepogixe.weebly.com/uploads/1/3/1/4/131437844/wafozades-wafoxaxa-nomizidoxiwuz.pdfIn PDF document text
    • http://igcopyrightclient.com/how_to_get_bigger_faster_stronger657ze.pdfIn PDF document text
    • https://jarosebat.weebly.com/uploads/1/3/4/6/134695718/395b9c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puwogumisaza.epizy.com/71730696090.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/resin_hedgehog_bookends.pdfIn PDF document text
    • http://ziboporo.epizy.com/bhagavad_gita_full_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/python_2._7_32_bit_windows_free.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/explain_how_to_use_the_standard_normal_table_to_find_the_probability.pdfIn PDF document text
    • https://s3.amazonaws.com/dexodekelaseki/r_programming_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/king_size_comforter_sets_with_sheets.pdfIn PDF document text
    • http://zakefuki.myartsonline.com/autocad_2020_printer.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_off00015e17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E17 5548 bytes
SHA-256: f508da18283e369db459bfa9d0de90eb324deb7f2dcbcce36e6a4dd7965f4ad5
font_01_sfnt_off000170d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170D8 11492 bytes
SHA-256: ec056e559a19d66d0c587ec159f104c007559cd08aab53446c5a62a99d6d35bc

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