Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be87cac9047c18c…

MALICIOUS

PDF

83.1 KB Created: 2021-04-25 20:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 7e4dc6d5df44cda25eba047f638db645 SHA-1: ced0b5d6b5b17f2eef4efc6d44c5687d030c8d0a SHA-256: 6be87cac9047c18c71d71ef7ea99ba8b7e01221f20babd1ab121c5346b6bd200
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, which is likely used to host a phishing page or a second-stage payload. The document body, though heavily obfuscated, contains text related to the embedded URI, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jottigo.ru/strik?utm_term=what+is+the+opposite+of+fair PDF link annotation
    • http://myimperfectmomlife.com/93353023573e9ie.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuvimavofo/enjgghA/ultra_street_fighter_4_pc_requirements.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/NmuNhaj/xavederonosakosax.pdfIn PDF document text
    • http://world-wildshop.com/simpson_pressure_washer_pump_parts_diagrampr4e6.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/23356376392.pdfIn PDF document text
    • https://cdn.sqhk.co/dupeguwova/jiiigha/pugusomitemuzitiwogesifu.pdfIn PDF document text
    • http://bekopomulasebi.getenjoyment.net/niruvazefe.pdfIn PDF document text
    • https://cdn.sqhk.co/tipefimex/6tidZhh/mcdonald_s_hours_near_me_covid.pdfIn PDF document text
    • http://bighome.space/free_bootstrap_4_templates_blogr31mj.pdfIn PDF document text
    • http://wafowufopenu.22web.org/bittersoet_season_2_episode_1.pdfIn PDF document text
    • http://com-copyrighit.com/brother_song_status_videog8954.pdfIn PDF document text
    • https://cdn.sqhk.co/jiledexuda/QMAijpf/11309620201.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/tujeviwakirawu/2643146413.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/automating_excel_reports_with_r.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/54510066236.pdfIn PDF document text
    • http://dodixuvizovov.epizy.com/what_should_a_2nd_grader_know_by_the_end_of_the_year.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/rajezodofunijuvarovoput.pdfIn PDF document text
    • http://woporebokut.rf.gd/ielts_reading_answer_sheet_printable.pdfIn PDF document text
    • http://toxukofotu.rf.gd/assassin_s_creed_book_download.pdfIn PDF document text
    • http://mepigijevu.rf.gd/analogy_questions.pdfIn PDF document text
    • http://gibilumopujilot.epizy.com/andhra_bank_rtgs_application_form_download.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/flight_time_calculator_free.pdfIn PDF document text
    • http://nibejodawugizex.rf.gd/mediafre_clash_royale.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_off000106ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106EF 4972 bytes
SHA-256: 1536e6e2b2501fecba74f346440822b021ac637e450c99bc0efb8b9d3ed215eb
font_01_sfnt_off000117dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117DD 11516 bytes
SHA-256: 782a4ff498e8bf75c4c24b2d06eb6a25fdd3cc355e96649a9692884042c28fb1

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