Malicious PDF — malware analysis report

Static analysis result for SHA-256 846ea524eccebffb…

MALICIOUS

PDF

77.0 KB Created: 2021-03-04 03:25:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1aeff2e9284a93548e7ecd51f193c62f SHA-1: 1932ad02cba41dd6665adcee87342066731308bb SHA-256: 846ea524eccebffb8706f339b31f7d04ac9af861b681fb7ef27bb4d5b5f54d98
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that mimics a search result for a repair manual, likely a lure for phishing or malware download. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites, potentially initiating a download or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://midufefew.ru/wix?keyword=toyota+corolla+repair+manual+pdf+free+download PDF link annotation
    • http://neip-forum.fun/7711121054002wes.pdfIn PDF document text
    • http://copyrightshelpcenter.com/junior_designer_salary_san_franciscopy2to.pdfIn PDF document text
    • http://luminar2-download.xyz/debussy_doctor_gradus_ad_parnassum_sheet_musicg22mn.pdfIn PDF document text
    • http://whalesqpa.fun/the_hobbit_movie_collection_download_in_tamil_isaimini5w7vo.pdfIn PDF document text
    • http://ueuniti.website/pour_un_eclat_de_lumiere_ekladatahqip3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462354/normal_6039a16ada27e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386621/normal_60219b952eae1.pdfIn PDF document text
    • http://craftsmansmetics.com/idle_heroes_wind_walker70vhm.pdfIn PDF document text
    • http://cleaner360.shop/check_your_aviation_english_freevdusu.pdfIn PDF document text
    • http://yourbigdick.space/210268121994styl.pdfIn PDF document text
    • http://omerkatanalp.com/paint_chip_poetryi0cr9.pdfIn PDF document text
    • http://qunit.space/bomb_squad_game_hack_apkvd9c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426972/normal_5fef19febe1a8.pdfIn PDF document text
    • http://bahis-sikayet.com/windows_10_cis_hardening_guidegnroo.pdfIn PDF document text
    • http://zyzycheat8.xyz/wusefakepazmj03.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/jakujakula/zavakudu.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/beboguje.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/absolut_vodka_cocktails.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/wediravefojipij.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/25624031034.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/guided_imagery_and_music_therapy.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/acid_fast_staining_procedure.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_off0000f11b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11B 5268 bytes
SHA-256: af5d13d84e770cf5343e04e91d67bd96ce8114d65e0c127b5761e6296eb6d780
font_01_sfnt_off00010308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10308 10204 bytes
SHA-256: e16a240b7220983ea1011cb6b12494084da29d6fea147519cbfb262ba1d0a9b7

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