Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd61275ec9dc123…

MALICIOUS

PDF

85.6 KB Created: 2021-03-16 10:46:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 45fceb4b051677603f6ac694e93a4ec4 SHA-1: 32e03c9fec2d5a5b2aa38ad30461efc1ec0fda43 SHA-256: dbd61275ec9dc123ddad97f3a0d89f6950c99c543e684319df6651024b18ab70
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://jacksth.ru/strik?utm_term=palsy+definition+in+medical+terms PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4492871/normal_5ff6af7d14351.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448556/normal_604cbd8f5836b.pdfIn PDF document text
    • http://choosemadam.site/what_is_narrative_paragraph_exampleonglh.pdfIn PDF document text
    • http://lnstagramservicecopyrights.com/amiga_os_3._1._4q9qb3.pdfIn PDF document text
    • http://ridunculus.com/runescape_corrupted_creatures_slayer_guidexfbu0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411691/normal_600013f32b2a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457005/normal_603b5db20102a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461234/normal_5fc6acd7d9d5c.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/nodetuxapabara/picsart_old_version_2013_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/airline_commander_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/application_form_for_dual_citizenship_in_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d78984eb-18d1-4827-a46c-b1d4c959d3a7/limiviz.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/functional_analysis_and_partial_differential_equations.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/jurarimivebawugixijepolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7afb2b72-d9af-4afd-b3dd-74474abd8f9c/laxemovexenudagimovapi.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/eleven_sports_usa_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/beautiful_flowers_scenery_photos.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/yantam_marathi_song_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be216d3a-ea9a-4ed0-a0b0-1a4e14ceb69d/zizalakifipu.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_off000111cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111CB 5268 bytes
SHA-256: 03b8b29554b9ab32060cd3eeef2efe4f993ec98e777af3bfb5def9d7647da8c4
font_01_sfnt_off000123ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123AC 11100 bytes
SHA-256: f8f966e26a008620f5653fc0e7a2b34436cf57245cc252c3d794a8287841c0a2

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