Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae0cf701a709b49…

MALICIOUS

PDF

79.9 KB Created: 2021-02-12 07:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: becb5a3d5d59f67a7d02e1b200a8c658 SHA-1: 167c6442dec42db85c24ad2eebde6d3166ba5cbc SHA-256: 9ae0cf701a709b493f5aa0195fa2fa46ee924c181c1a009bcbf761d419ff6584
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely a malicious domain used to host phishing content or distribute further malware. The document body, though heavily obfuscated, suggests a lure related to academic papers.

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://bologen.ru/wix?keyword=metaparadigm+of+nursing+paper PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4390057/normal_5ff56c3f7e470.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423772/normal_60073b9216718.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379605/normal_5ff8fe3880be0.pdfIn PDF document text
    • http://rafidoletusamox.22web.org/damoridokaput.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412606/normal_5fd72bda0714b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416811/normal_6019bbf955a76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475382/normal_5fe8322c26a5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467004/normal_5fc64850a02ec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454672/normal_5fec84402f0fb.pdfIn PDF document text
    • http://barisetufor.66ghz.com/wemogifujejoseripum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424935/normal_6009c0e5b8bcb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376096/normal_60079d6725f5a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bawujirilo.epizy.com/59735605658.pdfIn PDF document text
    • http://fereralud.epizy.com/coffee_branding_mockup_psd_free.pdfIn PDF document text
    • http://gajedimigifupet.epizy.com/imca_guidelines_for_dynamic_positioning.pdfIn PDF document text
    • http://nujudibixixiri.rf.gd/biwutudipagutabot.pdfIn PDF document text
    • http://jajowisomipuw.epizy.com/quantity_surveyor_progress_report.pdfIn PDF document text
    • http://kaposedujeterod.epizy.com/rarumu.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_off0000fd6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD6A 5336 bytes
SHA-256: 63cdf7b88948447ad49db809f025a61ee145cabb45111a621c52e15e4f55b2cb
font_01_sfnt_off00010f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F8A 10416 bytes
SHA-256: fa171675db80eba35c1cef3a75a406d25d794e25c6ed6e021ffd716e32388d68

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