Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e045b69cc28aa9…

MALICIOUS

PDF

80.0 KB Created: 2021-03-05 02:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: fdd118e5d48679477b9417d6ddeef391 SHA-1: 76f9009cbea95a9a54dfe9b5eb021876ed31cb6b SHA-256: a9e045b69cc28aa93319a9acd3fb6da70182593108eab095d122e630c768b72e
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV, indicating malicious intent. It contains numerous embedded URLs, with one prominent URL pointing to `xezojetit.ru`, suggesting it is used to redirect users to potentially malicious content. The PDF structure and the presence of external URIs indicate it's likely a lure document designed to lead users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=how+to+winterize+your+rv+with+air+pressure PDF link annotation
    • https://cdn.sqhk.co/lewivapawo/gdKqFsz/wevug.pdfIn PDF document text
    • http://zonitupupafof.sportsontheweb.net/mn_dmv_drivers_test_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/tinupolureg/t3aiajh/94372270401.pdfIn PDF document text
    • http://duzusedolatepe.mypressonline.com/navy_dive_school_panama_city.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/o2ifiae/zixabezimewasuzabo.pdfIn PDF document text
    • http://newuwedeza.mypressonline.com/77258880756.pdfIn PDF document text
    • http://woxijakuzadajew.getenjoyment.net/entrepreneur_roller_coaster_darren_hardy.pdfIn PDF document text
    • https://cdn.sqhk.co/sadetujadufi/gfibghP/my_talking_cat_2_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/balijanawi/haggshd/funegikamobobagoseso.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/dasenoxurox.pdfIn PDF document text
    • https://cdn.sqhk.co/muvifisi/tVghjaT/53895529229.pdfIn PDF document text
    • https://cdn.sqhk.co/mupalewefe/geh0hgY/zozupupunetorugemig.pdfIn PDF document text
    • http://jomikifu.medianewsonline.com/oracle_12c_sql_fundamentals_download.pdfIn PDF document text
    • http://labebatazavanoz.mygamesonline.org/xowonizuzusigumobew.pdfIn PDF document text
    • http://miribut.mywebcommunity.org/pabomu.pdfIn PDF document text
    • http://jekenufakewe.mypressonline.com/what_is_a_unanimous_consent_agreement_quizlet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/48418524-1278-41c4-9fc6-2e93ddcbd9f9/6334740027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4afff714-2e39-47c3-a38f-3029e8261218/aimersoft_drm_media_converter_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/one_page_parallax_scrolling_website_template.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/urdu_riddles_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71ba206a-a586-44a0-8dd0-dc052d8c2f2f/pazusibezovaxibiladusi.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/poe_challenges_synthesis_guide.pdfIn PDF document text
    • http://tivakifuzir.atwebpages.com/why_wont_my_dyson_handheld_charge.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/nitavunijijixibum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a02e4a1c-843a-491b-a481-59a407866304/vesaj.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/fikovimufag.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_off0000fba1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA1 5140 bytes
SHA-256: 668fe37697b8ce482ca73372d805d7de56be7ffe0c0452ef392fcaab52082072
font_01_sfnt_off00010d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D37 10872 bytes
SHA-256: 49880164ad2d687051b9ba31a02cf74d7b7e866183b3017e33710a1665a128b8