Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe148bdc8d4b042…

MALICIOUS

PDF

72.0 KB Created: 2021-02-26 05:29:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5e42e2a99b028e54af54d2da8ce8c517 SHA-1: 72fcdd2676b717a1c174147d7e5e2cb97eb48305 SHA-256: 4fe148bdc8d4b042017ad5909a05ef360d3fee2e2b75191187a80ed5c74b787f
126 Risk Score

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://maypoin.ru/award?keyword=nasb+study+bible+large+print+indexed PDF link annotation
    • https://cdn.sqhk.co/lupobikud/ajcQgjV/caregivers_for_compromise_facebook.pdfIn PDF document text
    • https://dudenaluwesugo.weebly.com/uploads/1/3/1/4/131453650/1906806.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459470/normal_5fe1eab02b38c.pdfIn PDF document text
    • https://cdn.sqhk.co/pujapipiwat/hdjfhdq/52604167767.pdfIn PDF document text
    • http://negimemexib.iblogger.org/kuvisubinuwap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472221/normal_5fd6723054bb2.pdfIn PDF document text
    • https://gepidoduxaw.weebly.com/uploads/1/3/5/3/135324144/3626398.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369922/normal_5fe29b7fa87f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387817/normal_60168b2c3403a.pdfIn PDF document text
    • https://towipikegogu.weebly.com/uploads/1/3/4/6/134690187/sulidasiwoguxewigaf.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/excelsior_definition_greek.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mukanebesiva.atwebpages.com/why_does_my_skin_burn_but_no_rash.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/platform_number_for_356.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/free_powerpoint_presentation_slide.pdfIn PDF document text
    • http://timagilo.epizy.com/how_much_to_charge_for_new_construction_cleaning.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/delhi_metro_map_blue_line.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/bosch_automotive_handbook_5th_edition.pdfIn PDF document text
    • http://dokedajonanumi.rf.gd/south_film_ing_movie.pdfIn PDF document text
    • http://dipulitexaxuz.epizy.com/40320401698.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/54388755360.pdfIn PDF document text
    • http://sidepojedava.myartsonline.com/business_vocabulary_in_use_intermediate_book.pdfIn PDF document text
    • http://bitines.myartsonline.com/26206216146.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_off0000dd13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD13 5408 bytes
SHA-256: 4d278426b29387bfe0e08f065aedf5fa21dc07dde62f26da68d598ad6c2f8d05
font_01_sfnt_off0000ef8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8F 10324 bytes
SHA-256: 59d3d9204538b7502f2cfe8b798dbed25757f14cb6bc922b38cfa300271670cf

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