Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ef0248ee4322e3…

MALICIOUS

PDF

75.9 KB Created: 2021-05-03 17:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e16b8af4160c469b3f9d8d45dafc8ccc SHA-1: 708fa0d50c8a788d6bbe8d60b25c67f7bd6668ac SHA-256: c1ef0248ee4322e3c9fb8c7c6c4c18d952a8d02c69b5fab7cd53ad4ab9b0a116
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or scam attempt. The ML classifier and ClamAV detection further support its malicious nature. Although no scripts were explicitly extracted, the presence of external URIs suggests an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/strik?utm_term=polk+magnifi+mini+soundbar PDF link annotation
    • http://kiloritijuxat.iblogger.org/31448102570.pdfIn PDF document text
    • http://kagivok.iblogger.org/stock_markets_news.pdfIn PDF document text
    • http://viwaginuf.iblogger.org/dihybrid_cross_worksheet_answer_key_biology.pdfIn PDF document text
    • http://bikizugupaka.iblogger.org/history_of_african_american_literature.pdfIn PDF document text
    • http://pabufit.22web.org/xuwewavagipelenumubibazi.pdfIn PDF document text
    • http://zinuvudoliku.iblogger.org/zuxegogafet.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/paxunu/44887439666.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/46191095635.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/doxumivorodena.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/raxupaxuxev.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/do_i_need_to_go_to_truck_driving_school_to_get_a_cdl.pdfIn PDF document text
    • https://s3.amazonaws.com/kukupunopedon/rexored.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/takuzojepetiwom.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/how_to_make_a_zen_garden_at_home.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/believer_song_tamil_meaning_lyrics.pdfIn PDF document text
    • http://vasetirepevomeg.rf.gd/ms_excel_vlookup_from_another_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/orbit_57161_sprinkler_system_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/honeywell_pro_3000_installation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/70676035451.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/consumer_reports_best_air_fryer_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/ka24de_manual_transmission_swap.pdfIn PDF document text
    • http://bexiponezewan.rf.gd/what_it_really_means_to_live_life_golden_meaning.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_off0000dc10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC10 5432 bytes
SHA-256: 582739fb1657b57ea2f5bd726c7ad63d68ed98f49486e3d2aa4a0e7b4576e618
font_01_sfnt_off0000ee78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE78 23252 bytes
SHA-256: 7cfb9def22719fbd3a5db91dc00f29341832bc827b53238e2ec753df8a2e0f7e

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