Malicious PDF — malware analysis report

Static analysis result for SHA-256 9349588ef306d3a2…

MALICIOUS

PDF

68.0 KB Created: 2021-03-12 08:23:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 7c0f591ac2a8d2a9db553f8f8ea15dad SHA-1: df910f6de2f4b71499578198132ff8a72674dc45 SHA-256: 9349588ef306d3a2352e89bf9b29b9c39c3416c758634daf0c46e75f8ec69026
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, suggesting it is used to host or redirect to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it is designed to exploit vulnerabilities or lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://fokemale.ru/strik?utm_term=laufstrecke+mit+google+maps+messen PDF link annotation
    • http://dkmz1.club/53785521093yybxy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418566/normal_5ff85a8f2863d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377909/normal_6005ef5236573.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_601fbbe439f41.pdfIn PDF document text
    • http://fosufupivufup.66ghz.com/metabolismo_aerobio_y_anaerobio.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451039/normal_5fc5c13db2683.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446645/normal_5fccb8d626fc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417030/normal_5fc85b4b96033.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427793/normal_5fe20a1f36b9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369504/normal_60310f26b1ed8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371814/normal_5fe8d93cee010.pdfIn PDF document text
    • http://getsalle.xyz/how_much_does_it_cost_to_study_animationhm8xq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412599/normal_604a81f36f9e9.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/batoragubukepo/surah_al_baqarah_translation_in_urdu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dbce9a1-c16e-4ca3-b117-d42c2095f97a/estudio_biblico_sobre_buscar_el_reino_de_dios.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/factoring_polynomials_examples_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd380c04-8f69-4963-978e-a5e09ff5af5b/boy_scout_merit_badges_online.pdfIn PDF document text
    • http://sipopos.epizy.com/31356728639.pdfIn PDF document text
    • http://fusopub.rf.gd/radib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35184240-2df6-49c7-9fe7-f4dc6a5ca6a8/prevailing_wage_fringe_benefits_pennsylvania.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc0ad691-62bb-44c9-8a9f-bbb94ddb47eb/31225021114.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/wilugiwavapavilepukenez.pdfIn PDF document text
    • http://tezipibuboxigo.epizy.com/90034072770.pdfIn PDF document text
    • http://kijekamazeju.epizy.com/49708078247.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_off0000ca06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA06 5340 bytes
SHA-256: 80aebb75adaf1100d30b8403b104de68b40b3f17ab84abc2e1b3e1b07063a56b
font_01_sfnt_off0000dc2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2D 11200 bytes
SHA-256: 199cda223f0b06b748030c93549ce278f69dcf39f48e82c22247f0b5e8a39334

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