Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a66a03817250f71…

MALICIOUS

PDF

74.3 KB Created: 2021-03-27 19:17:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 44f0958167d2c8e67327aa15f800fc54 SHA-1: 77557d3879836ab1c784d6556378a4e3b84ad165 SHA-256: 5a66a03817250f71e0a6ce4423d528a01cc52cdee5bbd0d8e4fa29e223ab8444
126 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and heuristics indicate it functions as a link farm, directing users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded links are indicative of a lure to external malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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
  • 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://golowaki.ru/123?utm_term=construction+site+inspection+form+template PDF link annotation
    • http://opensalle.xyz/nudizogamudadisimome0cvic.pdfIn PDF document text
    • http://cmb-accueil.com/train_driving_simulator_games_3dnlpok.pdfIn PDF document text
    • http://mini-cam2.club/sportcraft_treadmill_2.5v0zgx.pdfIn PDF document text
    • http://oneitshop.pro/photoshop_book_in_telugu_free_download4zbkv.pdfIn PDF document text
    • http://watulexop.iblogger.org/lame_enc_dll_audacity_1._2_6.pdfIn PDF document text
    • http://uorott.com/how_to_reference_a_cell_in_excel_vba8g3ic.pdfIn PDF document text
    • http://roman-holidays.shop/what_is_frog_and_toad_aboutel6bj.pdfIn PDF document text
    • http://demask.space/how_to_write_a_complaint_letter_to_uspsyxyta.pdfIn PDF document text
    • http://autobaff.xyz/la_seleccion_kiera_cassp3yxs.pdfIn PDF document text
    • http://futevosug.22web.org/grattan_institute_report_2018.pdfIn PDF document text
    • http://musc-media.xyz/organic_chemistry_brown_7th_edition_solutions_manual_freetqib8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b02877b0-b7a4-4a69-abb0-424cf2d53c8f/3nf_and_bcnf_in_dbms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f818607b-b478-44f3-96a3-4dd0725064d7/rimepejovabet.pdfIn PDF document text
    • http://limizepafut.epizy.com/98750368836.pdfIn PDF document text
    • https://9334512a-4df1-45dc-8804-f0fa1d9e2a3d.filesusr.com/ugd/9466eb_c2585f8f87094d9b9e3f71020650f41c.pdf?index=trueIn PDF document text
    • https://cf587a47-7c2f-4f55-8bbb-21a4c73503f7.filesusr.com/ugd/8ea597_3db4ad37858b4337bacdfac4dd8f3e59.pdf?index=trueIn PDF document text
    • http://mewiwujudulixe.epizy.com/zurudafisegolel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37c13c33-22f9-4b91-994c-ceb2070a7d49/fagunilorobegepalulosuvaw.pdfIn PDF document text
    • https://3794eb9c-cc8b-492c-aecc-44533f76aaa6.filesusr.com/ugd/1ee69b_8fed6ff9276045168287e08802d12440.pdf?index=trueIn PDF document text
    • https://76f5a3e5-08d8-4581-9975-6c1b933a1845.filesusr.com/ugd/dbbd16_afc116a659a3435ba452aa69714e90b0.pdf?index=trueIn PDF document text
    • http://puxotug.epizy.com/buxoweg.pdfIn PDF document text
    • http://bozalusi.epizy.com/chaparral_pro_light_italic_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/378bb506-0117-4d1b-9c4c-c77c45760357/vikarirogijodunox.pdfIn PDF document text
    • http://sarupisegov.rf.gd/fabegifesakuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/182ba952-63e5-4062-a497-e004704645ca/mewerebiwa.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_off0000e74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74C 5064 bytes
SHA-256: be4c5a7a20c9c787618dd96304918f5bde61abce1e3b52618b8c60c6441ddad4
font_01_sfnt_off0000f86c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF86C 10360 bytes
SHA-256: f8b4c2e09043e93bbd8d5312771b8cd612830a0185556b34342dfb122abec35d