Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0f9b825d9285c1…

MALICIOUS

PDF

69.6 KB Created: 2021-04-26 03:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 91d10675636383f5ba94f0f050b536e8 SHA-1: ce975881c7ea62fc57ba78b77607edc3fa1c80d4 SHA-256: 6b0f9b825d9285c14e8b382a11e9f1fd75e5317b93d56f7d30fd16b02e544e01
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains embedded URLs, one of which, https://bologen.ru/strik?utm_term=eiki+projector+mount, is flagged as external and potentially malicious. The document body, though heavily obfuscated, appears to relate to 'Eiki projector mount', suggesting a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/strik?utm_term=eiki+projector+mount PDF link annotation
    • http://mizusowe.66ghz.com/gifemewufuvokes.pdfIn PDF document text
    • http://julasopupep.iblogger.org/react_bootstrap_modal_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457862/normal_606744e2340d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460680/normal_6055c8e5680d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424400/normal_6050ed378503e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367938/normal_6020c1f1849ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456132/normal_606053865a74f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b75a6ab1-e6ff-406f-97a2-f1a53d080d3d/biwapamuluxefer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72e68fae-8c4a-4054-9b86-457bdaebc3a8/kunelevezomijusuguzete.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/9185797426.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/51218316196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42e30e1d-bada-449c-b751-d4ce01521f82/69754951900.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfaa0631-b16a-4b94-b143-f8ff44a9156d/average_boat_speed_knots.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfccc4d1-064a-4e86-a8f4-d66f5f1eeaf0/niwunab.pdfIn PDF document text
    • http://lazasubesuwup.epizy.com/gujudalijiborilafapitov.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/95326037271.pdfIn PDF document text
    • http://nefenevipenexo.epizy.com/14066238089.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/nuzuwusoxatopavupipadi.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/cartoon_network_comedy_video.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/44272320846.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/a_review_of_literature_case_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/what_is_565_900_seconds_into_days.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_off0000d4a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A0 4756 bytes
SHA-256: d26ffac8747ecf64fb64a93a9d3232c258e13b57e71e1a82ff4aa6078c795bd1
font_01_sfnt_off0000e4c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C4 10676 bytes
SHA-256: 038c5fe0d281cee9065c34a8082811ec3b35081e3e5420c8d0b7c0826a38cfbc

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