Malicious PDF — malware analysis report

Static analysis result for SHA-256 542eea6090cf1eca…

MALICIOUS

PDF

71.6 KB Created: 2021-03-08 11:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6cb08e6a700a4159a9fae728dc9a1781 SHA-1: 4b637072cbb40a049e6a73a8703c491e0959310e SHA-256: 542eea6090cf1ecae1d7b0e37314901f6a2a97106402ae80348f4356d368862d
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. No scripts were extracted, but the presence of the malicious URI suggests the document's primary purpose is to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=what+do+you+do+during+a+final+walk+through PDF link annotation
    • http://mxbur.fun/mp3xd_bajar_musica_gratis_para_celulardu95s.pdfIn PDF document text
    • http://wirelessinfo.ru/tell_me_about_yourself_interview_answers_quoraleqvi.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/dCgNZif/tubidy_free_mp4_music_downloads_search_engine.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/8d5U8ib/dujatone.pdfIn PDF document text
    • http://adv-workshop.site/39587191274dcdib.pdfIn PDF document text
    • https://cdn.sqhk.co/devisofage/f0OLcig/19462603890.pdfIn PDF document text
    • http://requiredjokblog.com/robo_defense_full_version_free_downloadmhpl7.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/bOifVGF/vatuzaxutovororaxun.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/jusuberu/ledapibutozutolide.pdfIn PDF document text
    • http://xomapagovujux.atwebpages.com/45872583845.pdfIn PDF document text
    • https://02687da8-bf2b-436b-a8ca-82c6e04513a5.filesusr.com/ugd/e48f8a_76be793565d740b38a5e2bce9222fa4e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/aium_guidelines_for_evaluating_the_fetal_heart.pdfIn PDF document text
    • https://54570836-76ea-4100-b78f-d1ba4c3cc0d1.filesusr.com/ugd/21ac59_564f8066c53f47bcb33846bf64ad577b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/english_conversation_practice_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/mexewuzeveguxumijigul.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/56580946571.pdfIn PDF document text
    • https://cae2aa39-5014-47ec-b549-0fed73f36d02.filesusr.com/ugd/c8683e_e60f097af1c047d189c6b4283a110468.pdf?index=trueIn PDF document text
    • http://tiluxusimutine.atwebpages.com/detoledolapaxalut.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/39586066378.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/bawujikuxolo.pdfIn PDF document text
    • https://d8d078ea-10ec-4787-8e21-ef6e32b87a24.filesusr.com/ugd/8f6098_d1800379e29847ba97ae40cbaac35433.pdf?index=trueIn 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_off0000db5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5A 5264 bytes
SHA-256: f54178b64266cd6da613ad8840ec3f3e85702d7f7c770f10db9706c02f2e9dd2
font_01_sfnt_off0000ed62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED62 10412 bytes
SHA-256: 3484bd6c2bb4d9b6f070a289af3819ce3cfc00d2872141e2a27ef787bded7b6f

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