Malicious PDF — malware analysis report

Static analysis result for SHA-256 abff0467fc94b840…

MALICIOUS

PDF

99.5 KB Created: 2021-03-12 01:45:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 8141dc16f66b9329fef4e45f4800667d SHA-1: c96854a023df0c486c478b2f0bc66f5e7ed46435 SHA-256: abff0467fc94b840e6ba1fc06760c28e45bac1dfeeca7a9e91c2c0ffc83ccf5a
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 critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document body and embedded URLs suggest a phishing or scam attempt, directing users to various external websites. The presence of numerous links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://resalured.ru/award?keyword=collapse+of+soviet+union+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421639/normal_5fef51027104b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488316/normal_6029d87dd0440.pdfIn PDF document text
    • http://websecurer.tech/how_to_fix_diehard_battery_charger65p7v.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/ic9Zhbl/751428064.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/59824227983.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457005/normal_5ffc921b554bc.pdfIn PDF document text
    • http://xiletunekukine.iblogger.org/90329211109.pdfIn PDF document text
    • http://copyright-supporthelp.com/36732529185oeivk.pdfIn PDF document text
    • http://vir-tus.com/rukudukulanozujenatakuryvte.pdfIn PDF document text
    • https://cdn.sqhk.co/rizonozugaj/PijBgfA/bass_guitar_chords.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464865/normal_5fd99e384790e.pdfIn PDF document text
    • http://gajaxujifusokul.mygamesonline.org/rinnai_r75ls_maintenance.pdfIn PDF document text
    • http://raxewaponoxiv.mygamesonline.org/36736447403.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/photosynthesis_in_bacteria.pdfIn PDF document text
    • https://cdn.sqhk.co/boxumiza/ihig2if/kulom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vimukomexetad.rf.gd/adjective_worksheets_for_first_grade.pdfIn PDF document text
    • http://satawakerexe.atwebpages.com/how_to_cook_a_brined_turkey_in_an_electric_roaster.pdfIn PDF document text
    • http://vewawisu.onlinewebshop.net/benewobepe.pdfIn PDF document text
    • http://rexawisoza.epizy.com/enzymes_worksheet_gcse.pdfIn PDF document text
    • http://vumamuv.myartsonline.com/76189277155.pdfIn PDF document text
    • http://xadifoduboboriv.rf.gd/jquery_ui_datepicker_calendar_icon.pdfIn PDF document text
    • http://fukatotapi.epizy.com/buseluvobut.pdfIn PDF document text
    • http://vupaguriwedizid.atwebpages.com/which_pump_is_more_efficient.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_off00014b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B48 4904 bytes
SHA-256: 04c2997beb2035ac1d160fbc1aa3117e5ddda848e0fc6ea0cac5a4885c575a88
font_01_sfnt_off00015c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C11 10768 bytes
SHA-256: 2cf8d4fe5d67595484f752c012d83ab9a379e36749b9fb723f69b21543feaf66

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