Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e8086d1dfead6c…

MALICIOUS

PDF

70.8 KB Created: 2021-03-01 15:48:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb6eb60af5b33674b0419f6008b6bb32 SHA-1: 1a3b945f467ae9ac67e366eef706025324c0acf0 SHA-256: d3e8086d1dfead6cf7b2eab64d6893ac1be02e393ec21bf8592d74e7f3668adf
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 PDF structure and embedded URI suggest it's designed to exploit users by presenting a lure related to a literary work.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/123?utm_term=sir+gawain+and+the+green+knight+textbook+version
    • https://cdn.sqhk.co/dufolatik/jrrggij/java_heap_space_tomcat_linux.pdf
    • https://cdn.sqhk.co/kagaxavog/degPieA/marketing_campaign_execution_plan_template.pdf
    • https://cdn.sqhk.co/winogolelog/hcsqwgc/luzokatexavuwovevevog.pdf
    • http://powuvomewekuxeb.getenjoyment.net/levuwuxakano.pdf
    • https://cdn.sqhk.co/tezofugowura/x9heon9/wupogaw.pdf
    • https://cdn.sqhk.co/mezutorixo/gkEhijj/lofakenanukekumekedotal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sewujajapivix.onlinewebshop.net/world_of_darkness_rpg_portugus.pdf
    • http://fibubaxuvuvixik.epizy.com/how_to_become_a_better_reader.pdf
    • https://s3.amazonaws.com/rizezobabub/tebejapefilazajotedusa.pdf
    • https://s3.amazonaws.com/mevuzokekenojab/58171509007.pdf
    • https://s3.amazonaws.com/pajukovuxetu/17349597054.pdf
    • https://s3.amazonaws.com/libeganot/51862325928.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d884.bin
89f634aaa5221e6f561e646586a746c0bc73f7a19629527808625cad004caa95		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD884 5580 bytes
font_01_sfnt_off0000eb8b.bin
39e4108f26a68d9a20a1a6486bb2b994f16d0156cb82e5022a2b2ca86aee34d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB8B 10312 bytes

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