Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e70f5643e9e8a13…

MALICIOUS

PDF

76.4 KB Created: 2021-03-22 15:45:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 35adbdd241442f8b9e4de089023f2355 SHA-1: 238f7bef617aab4defc3d805ceff174fa2b1baf2 SHA-256: 0e70f5643e9e8a1372c2cffe65c12dc8ffc25926deee87c41349faa331a7968d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to 'baarspo.ru' which is likely a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to search queries, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://baarspo.ru/strik?utm_term=trevor+noah+audiobook+apple PDF link annotation
    • http://bitiwiz.medianewsonline.com/xowigososebesijavij.pdfIn PDF document text
    • http://lonemap.medianewsonline.com/fundamentals_of_anatomy_and_physiology_11th_edition.pdfIn PDF document text
    • http://nanonewe.scienceontheweb.net/do_you_have_to_bake_a_pound_cake_in_a_bundt_pan.pdfIn PDF document text
    • http://aazzzry.space/77627084355qpihx.pdfIn PDF document text
    • http://jaditifesan.22web.org/how_to_tell_if_refrigerator_compressor_is_not_working.pdfIn PDF document text
    • http://shoop-fm.ru/browning_trail_cameras_user_manualsrbvt.pdfIn PDF document text
    • http://vizionsmc.net/frantz_fanon_wifek2eo0.pdfIn PDF document text
    • http://petersikdar.com/how_much_does_burger_king_make_an_hournwb0a.pdfIn PDF document text
    • http://vaxenovutejuzid.sportsontheweb.net/what_did_the_ancient_mesopotamians_look_like.pdfIn PDF document text
    • http://flowerport.store/passport_club_study_mapvy6gj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kipejefanowisu.atwebpages.com/58431650444.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/english_bombastic_words_apk.pdfIn PDF document text
    • http://futikuzita.onlinewebshop.net/40_rules_of_love.pdfIn PDF document text
    • http://wabupotobexuxu.epizy.com/buckeye_health_plan_provider_appeal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/tamil_christian_messages_free.pdfIn PDF document text
    • http://purevaxa.epizy.com/fizatiwuzanekud.pdfIn PDF document text
    • http://vulebodifoguvar.epizy.com/troubleshooting_dryer_not_drying_clothes.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/cardiology_journals_that_accept_case_reports.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/61970707627.pdfIn PDF document text
    • http://kemesuxaw.myartsonline.com/760500296.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/jaxuvanuxuwirum.pdfIn PDF document text
    • http://piwefijegiv.epizy.com/99433842098.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/chori_chori_song_salman_khan.pdfIn PDF document text
    • http://faxumev.epizy.com/z83_application_for_employment_word_format.pdfIn PDF document text
    • http://vomonulesew.rf.gd/is_gluten_free_bad_for_diabetics.pdfIn PDF document text
    • http://bovotefetola.rf.gd/evanescence_tourniquet_piano_sheet_music.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_off0000ee31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE31 5080 bytes
SHA-256: ee71f8d7051cc192f87535c4962f71f83c35e92eabf67b098de247a8f7d9e20b
font_01_sfnt_off0000ff70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF70 10708 bytes
SHA-256: 4874435d7e6547ce72fcbc8264657647f1073197a4f4bd2593eb80b5cf925d13

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