Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b4212e59b3cbe7c…

MALICIOUS

PDF

77.5 KB Created: 2021-04-27 01:05:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: deb29343bbb349451a70cc0c0b9b4930 SHA-1: 36bf5084862bef3c7f19e312e1e7d23b952a128e SHA-256: 5b4212e59b3cbe7c7bee413dc0043ccad0b9037e91786cd1ff65e9796e137cc5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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://vilenefex.ru/strik?utm_term=how+much+do+therapist+earn+per+month PDF link annotation
    • http://larts.digital/gaximuxozofutibuwafuwos608.pdfIn PDF document text
    • http://leoidet.xyz/383897047821nw27.pdfIn PDF document text
    • http://pisufixefonof.scienceontheweb.net/breast_cancer_project.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/dijizujizegorefapefofise.pdfIn PDF document text
    • http://vomamafawib.scienceontheweb.net/caterpillar_3512_generator_operation_and_maintenance_manual.pdfIn PDF document text
    • http://iblack.space/the_convoluted_universe_book_five058kd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vatimofaxemog.rf.gd/35793388486.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/repiwodudidezamosofajur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51e78be2-48f1-44ef-a1ab-2c40fd65efb8/which_statement_best_expresses_the_theme_of_the_short_story_harrison_bergeron.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34adb2cc-2b34-4818-95c4-420b544238a7/zajivumodamunik.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/welding_skills_workbook_5th_edition_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/dominos_employee_handbook_uk.pdfIn PDF document text
    • http://sarirepenibe.epizy.com/materias_del_cbc_de_ingenieria_en_informatica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ff27d0a-9e38-47d5-920a-bc202ee67a8c/why_does_my_pen_keep_blinking_red.pdfIn PDF document text
    • http://sazasewugekupej.onlinewebshop.net/risco_cardiovascular_framingham.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/53887653954.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce35296-7c1d-490b-8991-c1650ea53698/senior_interior_designer_jobs_nyc.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/honda_pilot_2013_manual.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_off0000f037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF037 5332 bytes
SHA-256: 7394b78df29a889afd15cf0914c859be7a5dc98373a73122273fed34c3800862
font_01_sfnt_off00010239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10239 11324 bytes
SHA-256: 68c5d02c2da55aa1eb611402e92d6be4ea089dbcd8da9710cc6312d716a4a57d

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