Malicious PDF — malware analysis report

Static analysis result for SHA-256 85d91cd36c98a128…

MALICIOUS

PDF

72.6 KB Created: 2021-01-25 21:31:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: e4c79e0955945d43674593f73c1f976d SHA-1: 9e11d1d05be84ead42002fc64029a8edff15b042 SHA-256: 85d91cd36c98a128c7c17c4f17622e2056805fbbac71457c275d31c6ec68bf24
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a phishing lure, likely leading to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://bologen.ru/123?utm_term=scientific+experimental+design+template PDF link annotation
    • http://fortysgjdk.fun/fuxewurevomesovexafui4hzn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367287/normal_5ffc044edd021.pdfIn PDF document text
    • http://all-casino.xyz/80118619812w0254.pdfIn PDF document text
    • http://garant-ritual.online/lupad978ch.pdfIn PDF document text
    • http://edarudost.online/large_pencil_pouch_amazoneq5pz.pdfIn PDF document text
    • http://vvd.bar/clip_tiktok_b_mz4q8t.pdfIn PDF document text
    • http://rineset.xyz/65999031814xm23l.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/evolution_movie_2001eoofm.pdfIn PDF document text
    • http://idclick.cash/xegijulaxamuvorigat7psmi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453719/normal_6006e9d3b539d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451561/normal_5fdeffd739700.pdfIn PDF document text
    • http://hustlinmoney.com/banco_bradesco_bic_codec5aj6.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/sojebelevenex/relieving_letter_format_for_teacher.pdfIn PDF document text
    • https://s3.amazonaws.com/juvetaso/administracion_financiera_oscar_leon_garcia_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/vpn_android_gratis_para_celular.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/tuxuzubudifefijaraxus.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/dissertation_abstract_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/spotify_playlist_waiting.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/aorus_engine_1._49.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/flinn_scientific_chemical_reactions_lab_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/divodasutemazutu.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/bpsc_application_form_date.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_off0000dd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD01 5644 bytes
SHA-256: 27c800694896790d6d78abb457e7bba0ee7427523867f42cd9ae5c7b8a8d4dcf
font_01_sfnt_off0000f02e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02E 10688 bytes
SHA-256: c5ee63b70dfb9d05a6b37c2441d1eb7a3fc8aad724ae78d39e3a7ceba521b0f5

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