Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e39bd88158c0cb…

MALICIOUS

PDF

66.0 KB Created: 2020-11-17 03:16:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: daf014dac5afb45b8f81f14f9f67de97 SHA-1: df98b2f78ec0087927a733291572aa93a36aa7c7 SHA-256: 71e39bd88158c0cbf8e9535da5232b4eba8210ee334a8211356aedb2c4b9b759
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that points to a suspicious domain, likely intended to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit users through a lure, possibly related to the game title mentioned in the document body.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/strik?utm_term=fireboy+and+watergirl+crystal+temple+unblocked PDF link annotation
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/3590787.pdfIn PDF document text
    • https://jelopujepifo.weebly.com/uploads/1/3/4/3/134341958/zaboxujabasuzov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367960/normal_5f8c0e089f532.pdfIn PDF document text
    • https://nagigezivozitos.weebly.com/uploads/1/3/4/3/134340852/tapazujulaviziwila.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/nawuvud/tigopubulebuxakubiwuwuw.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/nonbinary_demiboy_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4caa0bab-b4e5-44f3-94dc-33f3a254ee23/fasibivuxe.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/49174366214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c42ec4-e38a-4755-b957-361ba429da71/95802094386.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_off0000c498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC498 5744 bytes
SHA-256: 7c1d634c6a5ef7f79b9b9d3579f1ba86a9c3ccfe5afd384755b7f9463076b269
font_01_sfnt_off0000d82d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82D 10372 bytes
SHA-256: cf7e21de28779a4308b81cfa37675dc851b4ae1565a1b638f1e48d1144e9a73e

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