Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ee5dcad51bfc26…

MALICIOUS

PDF

82.7 KB Created: 2021-02-22 03:37:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 87e4ea4adc15c266c7a0d990e4f17699 SHA-1: a84b995b25d64af9c32106e490c6b6e8096f82a0 SHA-256: b6ee5dcad51bfc267e7ef9694666389c64c54bed0ccf9ae19562fdc659ccc5d2
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the overall classification suggest the document is designed to trick users into visiting a malicious site, potentially leading to further compromise.

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://druttle.ru/strik?utm_term=linear+speed+calculus+formula PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4390382/normal_5fc68a76f21c2.pdfIn PDF document text
    • http://fresh-ita.fun/19403810192qvv4q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494136/normal_6011eaa777b29.pdfIn PDF document text
    • http://logvoz.ru/26808758047rko86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375195/normal_5ffea3c2cdae0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472503/normal_5ff015466ea4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427821/normal_601831dfc033b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414159/normal_5fe5df350b5cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366382/normal_6021cd20b990f.pdfIn PDF document text
    • http://mrshadow.net/15492652293qfyu9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420037/normal_5ff7d8846382c.pdfIn PDF document text
    • http://insurancesouk.com/fosekimopobovunezesapotjn9e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409998/normal_5fd120d245f89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485004/normal_5ffe8ca5e516d.pdfIn PDF document text
    • http://salearea.pro/aashto_green_book_7th_edition5hrwg.pdfIn PDF document text
    • http://songkfrk.site/nugatunisozasukavoterei9ny3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489056/normal_602904a4e37f5.pdfIn PDF document text
    • http://hookup682.site/28887299066qekej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10547 5240 bytes
SHA-256: af8789da35c550e6a3ef22749c70c841ca13755130ec298c2dfa2a1c83435564
font_01_sfnt_off0001170e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1170E 11508 bytes
SHA-256: 9f912c1ad3c2e380b6de699a18fea9e36e127d1ce7efce6e2bab254f8ab51093

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