Malicious PDF — malware analysis report

Static analysis result for SHA-256 b48cb1da0699ec1c…

MALICIOUS

PDF

78.0 KB Created: 2021-04-08 06:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d8f9f92383ca06e78db672fd29546c1a SHA-1: 73fa49ef22516d75d1f1202491e1e5eecea39bf9 SHA-256: b48cb1da0699ec1ccba7a1864a787cc52c2eb2958a4f126c2c6caf369b4a9b7f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://soxebez.ru/wix?keyword=line+of+best+fit+worksheet+algebra+2+answers PDF link annotation
    • http://bexixibeguben.sportsontheweb.net/iti_engineering_drawing_books.pdfIn PDF document text
    • http://gexopuvarubuje.iblogger.org/common_core_6th_grade_math_workbook.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/7hgMrgg/classic_games_arcade_emulator.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/harx0gj/10237598868.pdfIn PDF document text
    • http://gitaxodepa.iblogger.org/attendant_propelled_manual_wheelchair.pdfIn PDF document text
    • http://misitaka.iblogger.org/graduation_ceremony_speech_template.pdfIn PDF document text
    • http://getexeto.iblogger.org/ben_shapiro_books.pdfIn PDF document text
    • https://cdn.sqhk.co/dojozafo/mghhe9K/factory_simulator_2_codes_roblox.pdfIn PDF document text
    • http://sumomubidisuwo.iblogger.org/habitable_zones_student_guide_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/wesegagage/mDVVdfg/utorrent_app_for_android_2._3.pdfIn PDF document text
    • https://cdn.sqhk.co/nesadatifu/iix0Yic/zofijivadapipopokidani.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/df5b658b-16d1-4253-9dd5-66e28f156a80/when_you_love_someone_so_bad_it_hurts.pdfIn PDF document text
    • http://gadegeganex.epizy.com/duxazedodor.pdfIn PDF document text
    • http://zedakukabizo.epizy.com/blended_learning_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23e2517d-0816-4805-bdf8-6417d2c83dfb/29722958643.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51bf6ae7-f1e5-4115-9982-148f4976833b/sovutipo.pdfIn PDF document text
    • http://luzafofefo.rf.gd/75349400159.pdfIn PDF document text
    • http://rinexijirava.rf.gd/ledoxakibemanavi.pdfIn PDF document text
    • http://famowasaj.epizy.com/ejemplos_de_monografias_hechas_en_word_con_normas_apa.pdfIn PDF document text
    • http://kesekerezox.epizy.com/appvalley_apk_for_mac.pdfIn PDF document text
    • http://widifusi.myartsonline.com/vovisanifobemudip.pdfIn PDF document text
    • http://difavokagakaruw.epizy.com/bijuzo.pdfIn PDF document text
    • http://votoromuw.epizy.com/asenath_mason_espaol.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_off0000ee43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE43 5396 bytes
SHA-256: c3bb6a8f6d124163f90bac3c994ef5c45862c42fe3d131e07568c79bb34a345b
font_01_sfnt_off000100b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B8 12108 bytes
SHA-256: ef7893dd0ebbd3996dcbf217970dad6e0bf2ea9c31015ccb6d1d87c541d82fe8

Open this report in the interactive analyzer, or submit your own file for analysis.