Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dd436267abbabc8…

MALICIOUS

PDF

70.5 KB Created: 2021-02-17 05:04:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6d92a64dc264d43565712e4e60481a36 SHA-1: 96830bf7acefbee5c96ba25a8360deb9912f23a5 SHA-256: 9dd436267abbabc83f3656dd0c546c4bce64f68ef38510620c2eacb07e4d0bfd
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=how+to+get+frequency+in+likert+scale PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5fd0acba9c811.pdfIn PDF document text
    • http://pinipuvazus.22web.org/3851116913.pdfIn PDF document text
    • https://cdn.sqhk.co/dibitarebizu/Orgf2ii/10925337642.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485015/normal_5fe2570225b68.pdfIn PDF document text
    • http://kepibarufot.22web.org/wasepapotizaxitipobar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370055/normal_5fd7a26f8b92f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369183/normal_5fe25074be709.pdfIn PDF document text
    • https://cdn.sqhk.co/dutaxato/djjgVif/tes_membuat_sim_c_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473410/normal_6018853e2cfd4.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/MOfLbgg/suxokuvejagolupuzonos.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/nojemi/computer_system_servicing_curriculum_guide_grade_9.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/325818307.pdfIn PDF document text
    • http://pujekejiwevote.epizy.com/bessa_medium_format_rangefinder.pdfIn PDF document text
    • https://s3.amazonaws.com/gimisorixosu/cisco_aironet_4800_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/geometric_series_convergence.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/adani_transmission_ltd_annual_report.pdfIn PDF document text
    • http://jibefemojus.epizy.com/bleach_vs_naruto_3._3_for_android.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_off0000d4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4EF 5392 bytes
SHA-256: d152f7a7dc3435f7e6f31200971beb760f784323e1f732efe396596b3db93ce9
font_01_sfnt_off0000e77b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE77B 10964 bytes
SHA-256: dde8b1f876fee8a9e7ce0e0ee132d2acf319db905f8cb1bd8d1411641cc6e271