Malicious PDF — malware analysis report

Static analysis result for SHA-256 dce361bb6422b01c…

MALICIOUS

PDF

78.7 KB Created: 2021-03-19 15:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e0a500025b685ef83e5ac4e0643e329b SHA-1: 5a2c2ee5b5ec663b9f9d149e43390bec3d1db191 SHA-256: dce361bb6422b01c434f89eabf46ae3dbbda8bbeb0757c5b3e8011368d4c22f1
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were extracted, the embedded URL and the document's deceptive content suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://dafemum.ru/award?keyword=hiatal+hernia+diet+sheet+pdf In PDF document text
    • http://goldstein.capital/quran_recitation_software_free73guq.pdfIn PDF document text
    • http://xtrading.buzz/high_speed_chase_las_vegas_right_nowkl9yh.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/76855663418.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/19494729684.pdfIn PDF document text
    • https://cdn.sqhk.co/matajikiwov/heQiha5/arpeggio_of_blue_steel_game.pdfIn PDF document text
    • http://lomidal.mygamesonline.org/kinoluxuvukejikami.pdfIn PDF document text
    • http://azules.ru/how_to_structure_a_comparison_essayxkd9d.pdfIn PDF document text
    • https://cdn.sqhk.co/fopavege/ktKibdJ/download_asphalt_xtreme_rally_racing_mod_apk_data.pdfIn PDF document text
    • https://cdn.sqhk.co/soziwariru/Nigjf7X/dusufavajarara.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/jhCiak1/guide_signs_names.pdfIn PDF document text
    • http://pirojibanenuzi.getenjoyment.net/nawixudi.pdfIn PDF document text
    • https://cdn.sqhk.co/worenora/ophftjf/the_whipping_boy_book_read_online.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/jimugivos/35861962094.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/gamitudusalelakanawofawi.pdfIn PDF document text
    • http://duvodix.myartsonline.com/security_analysis_2nd_edition_amazon.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/eclipse_test_coverage_report.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/reddit_learn_programming_languages.pdfIn PDF document text
    • https://s3.amazonaws.com/zabevog/84379496904.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_off0000f651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF651 5092 bytes
SHA-256: acdd8786996b55787820d9f6ea17446a1257e22a763383fc0b34e6e2747b617f
font_01_sfnt_off00010794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10794 10824 bytes
SHA-256: 6954f5c5d49ec38b954f8d7e414e5ded672cf985d0dfe65a3f34a77fb2d35ec5

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