Malicious PDF — malware analysis report

Static analysis result for SHA-256 e671b1f1ffc3d32a…

MALICIOUS

PDF

77.7 KB Created: 2021-03-04 12:54:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 48adbea737be88d1926e6f58c3539a46 SHA-1: 11a253e2469db39e41f6e092e4d165230e66a57a SHA-256: e671b1f1ffc3d32a2255f130f84bbd7f5517ac39bd00f29e6c43acc25cf7fc67
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are characteristic of malicious documents designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8020

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://midufefew.ru/award?keyword=cuantos+litros+hay+en+un+metro+cubico+de+agua PDF link annotation
    • http://kilewigi.iblogger.org/clula_caliciforme_concepto.pdfIn PDF document text
    • http://depozamojazuj.22web.org/how_to_use_wireless_ps3_controller_on_pc_windows_10.pdfIn PDF document text
    • http://shlifovka-pol.website/10th_std_english_book_2020o5f6f.pdfIn PDF document text
    • http://spainwow.pro/lizulapenuzanofimotulzpzfz.pdfIn PDF document text
    • https://cdn.sqhk.co/sigidezok/ifT8gia/latorunemegubu.pdfIn PDF document text
    • https://cdn.sqhk.co/miseseren/forhBkO/lunasolcal_mobile_apk.pdfIn PDF document text
    • http://hidver.com/how_do_i_reset_my_kwikset_smartcode_8885qllo.pdfIn PDF document text
    • https://cdn.sqhk.co/turaxulefa/9jhprih/star_wars_galaxy_of_heroes_events_padme.pdfIn PDF document text
    • http://discount50.pro/call_aundi_full_video_songljvsn.pdfIn PDF document text
    • https://cdn.sqhk.co/jisepozidis/9u5v78q/67829264213.pdfIn PDF document text
    • http://faponabon.mygamesonline.org/how_to_write_a_good_review_for_your_doctor.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kekokid.epizy.com/56210808071.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/b20_buzzer_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/similarity_transformation_matrix.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/chesterfield_mo_police_department_accident_reports.pdfIn PDF document text
    • http://dabinuxorolukew.epizy.com/xupuvi.pdfIn 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_off0000f800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF800 5500 bytes
SHA-256: 8f747e5601e57f9a4abd107c80b1b4aecba2288627785c2790c92ba92c60d9b3
font_01_sfnt_off00010a92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A92 11692 bytes
SHA-256: 91393270cdf87b4fe58caedc3f483b145c4b55bac92fe4777456f27611e6e721