Malicious PDF — malware analysis report

Static analysis result for SHA-256 039e81ba3328eb10…

MALICIOUS

PDF

93.0 KB Created: 2021-03-21 04:52:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 68697bbcbe2caa447016083f7608c9c1 SHA-1: 956aea61a33a72f5f56cedec932d8932e5a385cc SHA-256: 039e81ba3328eb10d78955e51614e39167864904319da1ebcbbe3dd02bee7b20
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm with numerous external URIs. The primary malicious URL observed is https://ponafet.ru/strik. The PDF structure and embedded content suggest it is designed to lure users to external sites, potentially for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/strik?utm_term=evenflo+symphony+dlx+all-in-one+%2528best+value+for+the+money%2529 PDF link annotation
    • http://rejorevubirobu.sportsontheweb.net/kiss_the_rain_piano_chords_for_beginners.pdfIn PDF document text
    • http://wefilevazobakeb.mypressonline.com/32077584743.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e0d0d77b-4c00-4265-bc22-f0cc5cf11ada.filesusr.com/ugd/957eb4_6a59c84ed58547d49f07198d37401e0d.pdf?index=trueIn PDF document text
    • http://xomapagovujux.atwebpages.com/bhima_koregaon_history_in_marathi.pdfIn PDF document text
    • http://maxafatuvapare.rf.gd/naduvutusijazed.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/jexurulugiloza.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/chelsea_team_sheet_2019.pdfIn PDF document text
    • http://zonafikepejese.onlinewebshop.net/bosch_800_washer_dryer_combo.pdfIn PDF document text
    • https://78151a86-a557-4e49-81aa-a2539eea45c7.filesusr.com/ugd/204f4f_e9b579f1a6364c5c9aa751b356271391.pdf?index=trueIn PDF document text
    • http://tebaputazaxuva.myartsonline.com/cisco_basics_of_networking.pdfIn PDF document text
    • http://dadagax.epizy.com/python_programming_language_syllabus.pdfIn PDF document text
    • https://df4002df-ed14-466c-b758-10ced248c840.filesusr.com/ugd/3b03e6_5cc5ac619c55419c8dbc2442915fd258.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kavalukato/ikea_bed_frame.pdfIn PDF document text
    • http://mijovutotukedes.onlinewebshop.net/2215741786.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/allah_avalente_pennakane_video.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/16039756352.pdfIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_a6218c947d2c478eb57ec233fbace2d5.pdf?index=trueIn PDF document text
    • http://lumigetutiburu.epizy.com/notification_icon_android_not_showing.pdfIn PDF document text
    • http://mogixos.atwebpages.com/koxowonebo.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/17401805187.pdfIn PDF document text
    • http://jeraferup.epizy.com/54653074235.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/8254263480.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_off00012b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B37 5796 bytes
SHA-256: 3b58b9afa297eae46d2228dc7be79054e3e73530869abe3b9afdf6f09d78ddb9
font_01_sfnt_off00013ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE9 11528 bytes
SHA-256: 7abbe2a3c64e8be785096d66c3e65a9f127ea29550545dc48be25c65ece8c526

Open this report in the interactive analyzer, or submit your own file for analysis.