Malicious PDF — malware analysis report

Static analysis result for SHA-256 45af48c944a535e1…

MALICIOUS

PDF

75.8 KB Created: 2021-04-21 11:34:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e8680f56ebb74b311323b70fdd188397 SHA-1: 5939b48bfac9767bb0ff9e7841e371fc036b3674 SHA-256: 45af48c944a535e1e086434b666b2ca73aaa8fafb439a893d4d6eae7e9701948
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://crophysi.ru/strik?utm_term=libro+de+calculo+integral+con+ejercicios+resueltos+pdf PDF link annotation
    • http://zedakobogesa.mypressonline.com/60408900635.pdfIn PDF document text
    • http://sirofopunisatus.iblogger.org/kororodulizub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392439/normal_5ff4559912709.pdfIn PDF document text
    • http://dawezedelofeda.scienceontheweb.net/cours_comptabilit_etat_de_rapprochement_bancaire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420019/normal_6055b73573002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388040/normal_606cfdb562b56.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/effects_of_bilingual_education_in_the_philippines.pdfIn PDF document text
    • http://xikisavi.scienceontheweb.net/egomaniac_vi_keeland_download.pdfIn PDF document text
    • http://wiwajekirutiw.scienceontheweb.net/2013_jeep_grand_cherokee_laredo_x_for_sale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_5fedfc5db340b.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/rakabexozu/sharp_el_1197piii_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/unity_2018_android_sdk_path.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/is_cissp_hard_to_pass.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22d4c25a-ab6b-4f15-a090-0aecdbf62ee5/sharepoint_learning_kit_office_365.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/define_chiari_malformation_type_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f968a0fe-95e0-4231-96c6-3dc4a7ea4470/how_do_you_charge_a_rascal_scooter.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/bangla_onubad_book.pdfIn PDF document text
    • http://tokejavopif.rf.gd/kajewapubi.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_off0000e786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE786 5480 bytes
SHA-256: 55bbb0bfd7a815f23a3d928138ad0ac9e0d38d8ff4a3a8d4b3aa232793379647
font_01_sfnt_off0000fa3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3D 11848 bytes
SHA-256: fd5059e6d4e74648c66d45476f1da75060f6a576712e5fac18fe91a42f777735

Open this report in the interactive analyzer, or submit your own file for analysis.