Malicious PDF — malware analysis report

Static analysis result for SHA-256 593a94208a6f5489…

MALICIOUS

PDF

76.6 KB Created: 2021-04-15 06:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61fdf13b17e522ae207fdff54eb5bcf3 SHA-1: d852e7034fc948dc47a65a81ff10dc72ecd6deed SHA-256: 593a94208a6f5489ce1dade730d4ec067210dd96ad7925570f506dab6d580025
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result for a local service, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the PDF structure and embedded URI are sufficient indicators of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://zajinet.ru/strik?utm_term=toro+lawn+mower+repair+omaha+ne
    • http://techanomic.com/kimuledifepofadajutaga3wx6v.pdf
    • http://inter-kalinka.ru/previous_employment_verification_letter_template_wordrteml.pdf
    • http://gravkamen.ru/air_hauler_2_crackwkpex.pdf
    • http://navoviragumaviw.22web.org/gta_san_andreas_bumblebee_transform_mod.pdf
    • http://pusapev.scienceontheweb.net/what_is_the_meaning_of_tree_of_life_movie.pdf
    • http://netekepipavosis.sportsontheweb.net/sejarah_agama_hindu.pdf
    • http://wivikaxebox.medianewsonline.com/advantages_and_disadvantages_of_internet_file.pdf
    • http://jurofenopoxu.iblogger.org/paavai_tamil_guide_thiruvalluvar_university.pdf
    • http://majusenise.sportsontheweb.net/pipexulenuzuvatila.pdf
    • http://mokemowowove.mygamesonline.org/27606108529.pdf
    • http://mekujoviwe.mypressonline.com/lukidozipudetobasupuli.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://robelonazolabo.epizy.com/free_drink_menu_design_template.pdf
    • http://zebafuvevejol.epizy.com/apache_spark_github.pdf
    • http://kofaxafogi.myartsonline.com/barcos_que_vuelan_gratis.pdf
    • http://katewamopexo.rf.gd/4579177856.pdf
    • https://s3.amazonaws.com/xoguwavosuje/critical_thinking_skills_meaning_in_hindi.pdf
    • http://sidepojedava.myartsonline.com/1066892336.pdf
    • http://pewulalabes.epizy.com/34171054890.pdf
    • http://roxugotosaka.epizy.com/humanistic_approach_to_psychology.pdf
    • http://lujuxepaxizi.rf.gd/88322626252.pdf
    • http://reniwen.rf.gd/48649057310.pdf
    • https://s3.amazonaws.com/laradusa/arcturian_guided_meditation.pdf
    • https://s3.amazonaws.com/penefelomiju/50776086985.pdf
    • http://buzumigasox.myartsonline.com/envision_math_grade_2_workbook.pdf
    • https://s3.amazonaws.com/ginutu/nawuja.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_off0000ee83.bin
44e4eefbc22417320733c0bf36948d82a0fcb5d33251a3717afb3f07b1a96519		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE83 4920 bytes
font_01_sfnt_off0000ff22.bin
3a61e7b9187ea86701a23d25d3654b666bff0333c0111d1ce4a126f4515e0682		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF22 11060 bytes

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