Malicious PDF — malware analysis report

Static analysis result for SHA-256 56409496af742b91…

MALICIOUS

PDF

78.2 KB Created: 2021-04-04 09:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: bdb4e59b6545451842e52175486eaacd SHA-1: 9490de934a386a051c680de9f1f380e0d6767f92 SHA-256: 56409496af742b9111dd8ee273db2031c8c2f5118610f0c6f9719adc73e3360b
104 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and the document body suggest a lure for downloading a printer driver, which is a common social engineering tactic. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dugedepap.ru/strik?utm_term=hp+p1102w+eprint+driver PDF link annotation
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500186/normal_5fe262ed037c7.pdfIn PDF document text
    • http://pirewixuzejetin.iblogger.org/evaluating_algebraic_expressions_worksheet_with_answers.pdfIn PDF document text
    • http://simkosa.website/how_to_know_my_chinese_zodiac_sign_by_date_of_birthtjxd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405650/normal_603f803dcff24.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/sonic_menu_specials_for_todays8itw.pdfIn PDF document text
    • http://daliadiago.com/sheets_of_plywood_at_wickes54rvh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491687/normal_6049a319e21aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444386/normal_600e088910b12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500889/normal_600ebfd5904ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370286/normal_606257a4bc494.pdfIn PDF document text
    • http://clobuss.ru/hey_jude_guitar_chordsrbj5h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483104/normal_5fcd26f7ede02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410414/normal_603891deb04fe.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/rikolesafuwofar/utep_mechanical_engineering_degree_plan_2019.pdfIn PDF document text
    • http://sapataxetawot.epizy.com/91174157261.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/wonutifazetotarewolutoxaj.pdfIn PDF document text
    • http://roroturazukixij.epizy.com/rubevusu.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/chakravyuh_full_movie_free_in_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/north_jersey_saltwater_fishing_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/zunofedes.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/guided_bus_longstanton_to_huntingdon.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/xujedexotoj.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/mopubelitukefutu.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/google_sheets_merge_cells_hotkey.pdfIn PDF document text
    • http://fevafimavot.epizy.com/python_format_code_vscode.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/34711074554.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_off0000f5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AA 4972 bytes
SHA-256: da81412ece7d89dc86df04d6514b569becb878f980001a0fed24a86dd1fef6e9
font_01_sfnt_off000106c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106C9 10504 bytes
SHA-256: 431046d97a832574fa13c1c135f106819fd6d75d9375d836746538c6ff9e49ac

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