Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c7452f19808cfe2…

MALICIOUS

PDF

77.0 KB Created: 2021-05-07 07:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: add4315ed395dc1cd9b13870894c06bc SHA-1: 78a268300284d4e49b2984659287e2d982b4281f SHA-256: 0c7452f19808cfe2df2e66aa216d6a8aba70cd6fb9f4c252320b77d6a27e5463
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains numerous embedded links, many pointing to disposable hosting or suspicious domains, suggesting a link farm or phishing lure. The presence of external URIs and the overall structure point towards an attempt to redirect users to malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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://dugedepap.ru/strik?utm_term=the+hobbit+book+size PDF link annotation
    • http://jovefupe.mywebcommunity.org/fizojuruzugovumadu.pdfIn PDF document text
    • http://kisiguvawatabom.22web.org/tigobegafafo.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/egghcJU/scary_teacher_3d_cheat_mod.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/x1_dvr_box_dimensions.pdfIn PDF document text
    • https://cdn.sqhk.co/zalopubid/idWieie/sixawif.pdfIn PDF document text
    • http://kaxavetaxudu.mywebcommunity.org/cause_and_effect_worksheets_for_grade_6.pdfIn PDF document text
    • http://japijemerojin.22web.org/68426207809.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/proyecto_de_tesis_modelo.pdfIn PDF document text
    • http://vawabipoxe.sportsontheweb.net/a_whole_new_world_piano_sheet_easy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laxaguwen.epizy.com/critical_path_method_and_pert.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf4fbb51-9276-4700-808f-f8ed6a23482f/danielle_steel_books_in_order_written.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a9d8e48-7318-423d-9412-a6466596c85f/blood_bowl_mini_scale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/878de837-1dfe-4a22-bd41-c58fa0c4cdec/nilit.pdfIn PDF document text
    • http://kexomun.myartsonline.com/lanesapidotiregaxini.pdfIn PDF document text
    • http://rokafexoxo.epizy.com/45165434364.pdfIn PDF document text
    • http://tozetusetexu.rf.gd/amazing_love_chords_e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c37c631c-c357-4db0-9761-c2df5b7830d0/how_to_start_running_interval_training.pdfIn PDF document text
    • http://fanalejowegop.atwebpages.com/digolil.pdfIn PDF document text
    • http://tulifal.onlinewebshop.net/55296109986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0247a104-dcf6-4c88-a981-61c80555d06a/rijifafovaxikifozate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66d40585-d3f2-4f4e-88c1-b400fccd5d17/harry_potter_characters_patronus_quiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95bef63b-7117-4a52-8617-2bf4952fe474/72888067871.pdfIn PDF document text
    • http://fotizojorirepel.onlinewebshop.net/palm_reading_book_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44585165-8057-480d-84da-512ba1389ebe/what_is_used_to_label_the_energy_levels_of_electrons.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_off0000ef50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF50 4636 bytes
SHA-256: 3141703988cb12bf29f22a9b9f546d49109df181811cc95232d6b4be07f58618
font_01_sfnt_off0000ff20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF20 11420 bytes
SHA-256: d1564f9cf4290e40b331b0da58f86d61303d243474c9d3475a3aaf7b53edecf2