Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2244f3f0830a079…

MALICIOUS

PDF

70.7 KB Created: 2021-02-28 07:27:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 86739c9405d3288599fdf17b7acb0729 SHA-1: 4ec042c167dbc56847a309f48887db59dcfcb3a9 SHA-256: f2244f3f0830a0793d4bb7011c5424f39b098bd1c41a275d744416d042fc0289
104 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan PDF. The embedded URL and the document body suggest a lure related to a cash register manual, likely to trick users into downloading a payload. The presence of multiple suspicious URLs further supports the phishing and download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/award?keyword=how+to+program+a+sharp+er-a420+cash+register PDF link annotation
    • http://tuderoba.getenjoyment.net/dofazuxog.pdfIn PDF document text
    • http://biweekamnf.com/roginulerunegudo9qej2.pdfIn PDF document text
    • http://bionatur.space/88865239176evf5o.pdfIn PDF document text
    • https://cdn.sqhk.co/bijozugetav/jijHiia/intelligent_hub_android_download.pdfIn PDF document text
    • http://xelasurugopu.mywebcommunity.org/22443926185.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/gifijV2/chemical_elements_chart_list.pdfIn PDF document text
    • http://xviiivbgz.com/26338888c27tx.pdfIn PDF document text
    • https://cdn.sqhk.co/jizuxadif/3AzVuQ8/nasal_spray_for_dry_nose.pdfIn PDF document text
    • http://thrivewebs.com/essentials_of_economics_8th_edition41pok.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/bidurudilidujug/kizafawu.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/2006_evinrude_e-tec_90_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/gesexejakoko.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/59475653641.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/90590799384.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/best_technical_analysis_book.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_off0000d572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD572 5760 bytes
SHA-256: fa973f42108fdcb98651445893c6b444e7e1253ae0fb9b3e987f60f0f59f0846
font_01_sfnt_off0000e90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE90D 10712 bytes
SHA-256: cfcf49cdeed5eb5582be095cae0d777e1017627e6c071ca92793545249918411

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