Malicious PDF — malware analysis report

Static analysis result for SHA-256 1595ee7a60e5e7e2…

MALICIOUS

PDF

80.9 KB Created: 2021-03-03 07:31:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: a1814e30210eec6c5e5d0ebed29945de SHA-1: 50db99a31d9cf62cecfc28c27eaa812fc9c88baf SHA-256: 1595ee7a60e5e7e2b57494123c0ba8bf45ca93b3dc5ee5af2a52028443b5fa7b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, disguised within what appears to be document content. The PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further malicious content.

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
  • 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://resalured.ru/wix?keyword=ffxi+bard+guide+2019 PDF link annotation
    • http://vevaxogejaz.scienceontheweb.net/heart_of_darkness_quotes_explained_with_page_numbers.pdfIn PDF document text
    • http://veviwumifuvemuz.mypressonline.com/what_does_blood_behind_your_eye_mean.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/18720607128odsc3.pdfIn PDF document text
    • http://vibolofisef.mywebcommunity.org/barriers_to_effective_communication_definition_and_examples.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456389/normal_5ff0f3f9508cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499341/normal_5fca361e396e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/zelda_ocarina_of_time_gamecube_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/compressed_sheet_mask_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tamovagag/angular_component_template_not_showing.pdfIn PDF document text
    • http://xolevusafo.myartsonline.com/used_schwinn_230_recumbent_bike_for_sale.pdfIn PDF document text
    • http://legokejapo.atwebpages.com/sims_3_cc_skin_tumblr.pdfIn PDF document text
    • http://guxejusoselota.myartsonline.com/what_to_name_my_graphic_design_company.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/kiwolivunij.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/5849024870.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/academic_writing_for_graduate_students_answer_key.pdfIn PDF document text
    • http://vugugemo.atwebpages.com/92190607712.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF424 5096 bytes
SHA-256: bc71fd4485e5274cecdf496c4b61ba3338e50df8b412f11701d639fed60460ed
font_01_sfnt_off0001058c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058C 10200 bytes
SHA-256: adc36f31b4e80c0435f9350bd35d6b0bb8e02814ea7643e9f47e08d64cffe1a2
font_02_sfnt_off00012868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12868 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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