Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af693cbfc9ed22f…

MALICIOUS

PDF

77.8 KB Created: 2021-03-30 07:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: fa19d048f3b0750bbb7e3b1bd23b8a8b SHA-1: 251b4e534db5e3e18f1116307b4bfe942ff86016 SHA-256: 6af693cbfc9ed22f766996ee3956a8f1491302b1462dcd8cfa793571e2b0d3cc
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to trick the user into visiting a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to deliver a malicious payload or redirect the user to a compromised resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/award?keyword=quality+assurance+and+quality+control+difference+pdf PDF link annotation
    • http://bovibuvebus.getenjoyment.net/josomakiritasifed.pdfIn PDF document text
    • http://gebevojika.mygamesonline.org/76357890091.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393197/normal_5fcc2b3f38776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386084/normal_6062a9ac9f933.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480187/normal_5ffa6924baf39.pdfIn PDF document text
    • https://purubagenipobeb.weebly.com/uploads/1/3/1/3/131398544/c2fa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378855/normal_5fe765ad92c6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448129/normal_60303c2f350fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443598/normal_6054c5f5af568.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413019/normal_604d9f0b1421d.pdfIn PDF document text
    • http://pressit.fun/30607430846dg6on.pdfIn PDF document text
    • https://nufewaxitobazat.weebly.com/uploads/1/3/4/7/134748461/965ab96c321e9c.pdfIn PDF document text
    • https://nedosadowizo.weebly.com/uploads/1/3/5/3/135347652/6c7a41815.pdfIn PDF document text
    • https://gapikedezasede.weebly.com/uploads/1/3/1/4/131438622/ruvuzo-dujewinidekobip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485172/normal_6004cac55921f.pdfIn PDF document text
    • http://nuwazomesesanok.mygamesonline.org/39761062678.pdfIn PDF document text
    • http://usejus.club/bebamiluwul93uij.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/dobesogum/xifesuwexoxaze.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/comparatif_performance_assurance_vie_2017.pdfIn PDF document text
    • http://vakizonozajaxe.onlinewebshop.net/sosujulemijonodeninixuf.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/what_is_the_average_salary_of_a_medical_technologist.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/sijezozexesizub.pdfIn PDF document text
    • http://jigisasamupor.onlinewebshop.net/pejibudanututewofo.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/delomikiw.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_off0000f2d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D3 5440 bytes
SHA-256: 0893a51811674181652e97b0748f4f7c5522e005d88e4307da0480891f9eef69
font_01_sfnt_off00010567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10567 10548 bytes
SHA-256: 7496ed03038417fdfe08c6637d12edab393bf1f0bd53b96f8bc8df3c5eaa4684

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