Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d01d591586f8300…

MALICIOUS

PDF

81.0 KB Created: 2021-04-18 11:59:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86abdeab45f891378cb73fcd4e55aa39 SHA-1: d48086d838604d1a3e907002db863035b185b597 SHA-256: 1d01d591586f8300a41cf8fb4a059d6319b6554e29f7e25953a6940610676590
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest the document is designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://pelibifir.ru/strik?utm_term=what+is+your+favorite+video+game+in+spanish
    • http://nunovoxiwanafuz.getenjoyment.net/afcat_2020_solved_question_paper.pdf
    • https://cdn.sqhk.co/xuteposidobi/Wodgigf/second_galaxy_review_2020.pdf
    • http://fufejezonodim.mywebcommunity.org/juxivamutoloruzimoz.pdf
    • https://cdn.sqhk.co/muresogus/idifibx/black_beauty_cast_1980.pdf
    • http://bivaxopepukoxi.getenjoyment.net/clustering_technique_in_writing.pdf
    • http://midarujiwuvi.mygamesonline.org/buku_sejarah_asia_selatan.pdf
    • https://cdn.sqhk.co/vumivatuvi/ShjBjeo/mor_sansar_ma_dil_ke_sitar_ma_song.pdf
    • http://kosonetibekub.medianewsonline.com/libro_cardiologia_guadalajara.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b61f17f5-9ae9-4992-9f7d-0aaa85c2331b/75485585977.pdf
    • http://kikukuvikato.myartsonline.com/health_and_physical_education_class_11_book.pdf
    • http://babazemo.epizy.com/monkey_go_happy_witchcraft_answers.pdf
    • http://dilabopitomosif.epizy.com/zotem.pdf
    • https://uploads.strikinglycdn.com/files/418131d1-e563-4561-bf0f-de95dbe71b5c/which_of_the_following_is_a_topic_studied_by_macroeconomists.pdf
    • http://samesesodore.onlinewebshop.net/96043762843.pdf
    • https://uploads.strikinglycdn.com/files/c5d491b5-2b32-402c-877c-b8da3898b50e/are_speakers_waterproof.pdf
    • https://uploads.strikinglycdn.com/files/e83059a8-0485-4149-8b0c-16631eed0925/vizio_2.0-channel_sound_bar_w_bluetooth_sb2020n-g6_review.pdf
    • https://uploads.strikinglycdn.com/files/d1dff4c0-3209-4329-b301-9c5619b74ec1/physical_milestones_for_0-6_months.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff7b.bin
d4d37333de79e842ce444c9f4629ddcef1c832e3d0e994d74e0787871d79c28d
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7B 5596 bytes
font_01_sfnt_off00011276.bin
8c5e190402a0aee6a31d386ed495e07dcfaebeb4ee11417d59add0c4e7056ef0
pdf-font-stream PDF embedded font (sfnt) at offset 0x11276 10700 bytes