Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff9d4e3d9ad371c8…

MALICIOUS

PDF

71.3 KB Created: 2021-02-24 19:23:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: e3cfc05f6cdec27c29aa3371ed80366a SHA-1: 5c0fe74015d1a2023efb064dd4ce03ef152bda50 SHA-256: ff9d4e3d9ad371c82b154597e2cfe02be45df4efdf9ec9b4fb9ed62c3ebc1165
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://druttle.ru/123?utm_term=hansel+and+gretel+witch+hunters+netflix+rating PDF link annotation
    • http://verefdliyvtorogo.xyz/factorization_worksheet_class_8fyhly.pdfIn PDF document text
    • http://nijubuwuw.iblogger.org/cisco_dvr_8742hdc_manual.pdfIn PDF document text
    • http://kumorafeg.iblogger.org/gijup.pdfIn PDF document text
    • http://wulodab.iblogger.org/bacon_lettuce_tomato_sandwich_nutrition_information.pdfIn PDF document text
    • http://mon-cmso.best/9462864756iibqw.pdfIn PDF document text
    • https://cdn.sqhk.co/zijikunu/1iduhcl/contacts_widget_ipad.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/fatutisibikejigub.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/pibabopuduj/46401454182.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/desktop_support_engineer_resume_template.pdfIn PDF document text
    • http://kulaxukiju.epizy.com/install_play_store_apk_for_pc.pdfIn PDF document text
    • http://lapukup.epizy.com/led50b45rq_wont_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/64468917776.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/assamese_film_kanchenjunga_song.pdfIn PDF document text
    • http://pubexet.rf.gd/donumetajam.pdfIn PDF document text
    • http://xesidif.epizy.com/declaration_of_independence_rhetorical_analysis_worksheet.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_off0000d6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E8 5404 bytes
SHA-256: 925c09f97a21e8a06741a86dea9ee72d0ae48b2401015d4290e15e79b5b627c1
font_01_sfnt_off0000e958.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE958 10700 bytes
SHA-256: 81f8254bfca810b7fe683ead736e0647100b4351efc88eeb5e9ec6ab6655ea4b

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