Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6a7a9d0aca796c8…

MALICIOUS

PDF

79.4 KB Created: 2021-03-15 19:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 4ee6b80944b6f3a6b912182e8538fb6d SHA-1: 98fe9c11fa98ff4112b56f68a41f2932de0d263d SHA-256: f6a7a9d0aca796c86f5041934428048e7ab4abcddb2450f17c2579f5fab2f1b7
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as Pdf.Phishing.Trojan. The presence of an embedded URL pointing to 'lozipotod.ru' suggests a phishing or malware distribution attempt, disguised as a search result for educational content. The PDF structure and embedded content indicate it's designed to trick users into clicking external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/wix?keyword=7th+grade+go+math+textbook+pdf PDF link annotation
    • http://jokojujut.medianewsonline.com/yaesu_ftm-100dr_cross_band_repeat.pdfIn PDF document text
    • http://lunagogafoxoj.sportsontheweb.net/descargar_libro_operatoria_dental_barrancos.pdfIn PDF document text
    • http://okrasote.info/28616323734w5607.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/canon_pixma_mp250_linux_driver3uv89.pdfIn PDF document text
    • http://xubaseki.iblogger.org/tidoluwarejefuliw.pdfIn PDF document text
    • http://lifegirls.site/xavewisebaw2vv.pdfIn PDF document text
    • http://pearhaidhr.fun/lutamusotevusukojaban7kgd6.pdfIn PDF document text
    • http://csxmoney.info/how_do_you_use_a_chest_expander_springmcs0b.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/vipinib/revavu.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/kujute.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/56248844708.pdfIn PDF document text
    • http://rugefar.myartsonline.com/zolpidem_20_mg_bula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adfe3ced-a9ed-4204-bd7a-da9f0a744ad1/hp_laserjet_pro_400_m401dne_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7690890e-35d1-4c4f-9d99-d47dd78be247/why_are_my_page_breaks_not_working_in_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/188f2492-6e4b-4b2c-b425-4ad59906db4d/34990696796.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ebe865-1483-4adf-8e79-d9cfe136aeb4/79021714666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7459d44e-b167-4376-b2db-d09819599fdb/diluzufumupuwumuvaza.pdfIn PDF document text
    • http://zikenapija.epizy.com/92060762432.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28ce3829-2ba4-4f1c-b3f0-bab8f2e29e20/zodoremixaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/criminal_case_mega_mod_apk_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/16924154013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c320aec-7091-4f2d-a7c2-8ad9ae2a4923/what_are_the_components_of_a_script_in_ai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f0a7082-4e02-4d70-8c23-db1f85c1734a/decision_tree_algorithm_using_information_gain.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/043f8f33-5e63-4592-bd70-a7080e1ac3b3/python_learning_course_free.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_off0000f3bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3BB 5500 bytes
SHA-256: 043353f8a687f53c02c92e29ec079921ff25de4dced94ffb75bdf8ff643ebf25
font_01_sfnt_off0001064f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1064F 13280 bytes
SHA-256: a2cc1d54d41007750cdf8cd2563aa0ed6b29a7f77fc717ac59cbd9de7f3fb760

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