Malicious PDF — malware analysis report

Static analysis result for SHA-256 2934038d1a112182…

MALICIOUS

PDF

68.3 KB Created: 2021-03-03 21:23:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f680dbcffcaf52edd324a4ed6ecc7c4b SHA-1: e8ddb1de6bc960579b994a92f47dfb2ddc280b09 SHA-256: 2934038d1a112182174f419c2a7f51e323040c78eda94237918893750a26a9a1
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'jottigo.ru' suggests an attempt to redirect the user to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wix?keyword=dennis+wong+aquascape PDF link annotation
    • http://moxegelubopidi.sportsontheweb.net/letter_of_intent_for_turkey_scholarship_sample.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419828/normal_6017feb309366.pdfIn PDF document text
    • http://emirofficialzm.com/nfpa_25_free_downloadhlrfn.pdfIn PDF document text
    • http://proita.space/govotsuc76.pdfIn PDF document text
    • http://shoop-fh.ru/additional_command_line_arguments_fortniteffqhv.pdfIn PDF document text
    • http://ag-management.space/free_bible_study_notebook_templatekr122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374839/normal_601f24bdbb099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457592/normal_603130cba50c6.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/padadutiseni/zelda_ocarina_of_time_rom_n64_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/vumewirixopezak.pdfIn PDF document text
    • http://vujuvisesakok.myartsonline.com/zapudowopigumegiwiv.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/bachelor_party_vegas_2006.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/nuxukexixigejarubozo.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwenoxuzasila/format_date_php_mysql_datetime.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/masudofudarezepudebo.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/search_comments_in_google_docs.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/2160459146.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_off0000cf81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF81 5188 bytes
SHA-256: e2964fd1974c0f390dfcd3b9e62aa33d2cf011e8a9f90bf5a5dd65edb8bf01ae
font_01_sfnt_off0000e15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE15B 10096 bytes
SHA-256: 7a91d8b3618ce35aaabc5fbaa242e42d2858cc97f54e340ec692634112b6edd4

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