Malicious PDF — malware analysis report

Static analysis result for SHA-256 585d04f02927bb2b…

MALICIOUS

PDF

70.6 KB Created: 2020-12-07 00:03:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c86bba1c3c133ef95ef1e56da516d72d SHA-1: dc945dc2ac872d56f6c9ca8434672f71985b5e50 SHA-256: 585d04f02927bb2b1b2e988ffb79dce2da1bd1239af4892e9254ed2d7adaf672
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 an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

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://trafffe.ru/strik?utm_term=orange+county+cross+country+championships PDF link annotation
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/9232432.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382949/normal_5fbb26ebb8e4d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377674/normal_5fc775bdee5c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e32f322-2e58-4cfa-b2ec-362261acf0f8/ratios_and_proportional_reasoning.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1a765405d5340f32ee4e2/t/5fc51e40a97599144e9c88a4/1606753857042/japajaziwes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6277019-76a6-4ee8-9119-19af33e830e9/google_chrome_delete_browsing_history_on_exit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10aaaf9866f3fd2d521c0/t/5fc2760e3485235c86167380/1606579726863/infinite_heart_pieces_ocarina_of_time_3d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7216d568-f7e1-4dad-aad2-4e988771490a/nilenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be988439-17e3-4966-8566-bf7bf67e451c/oral_b_7000_vs_8000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/725f1c73-0afd-4e3d-b0d3-aab5b1142ce1/9086449421.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd00f62c6de34c7a39706c/1606222070820/79577315247.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d8138ef7301f8b2a384c/t/5fcce59e3ff1011540f1342e/1607263648161/9931649607.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1844e6d49a06bb59817f/1606293575828/knowledge_cleric_gods.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c64d3dfdd95b60f68ae3/t/5fcaaaa4538ea9548d9758da/1607117477495/84073088261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a8b34d6-f2f6-4f03-be1c-21b5c8694421/libobimasax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7af58cf9-853f-4a25-8048-2264a810f632/vaterozibufaneginusi.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_off0000d8a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A3 5444 bytes
SHA-256: caae599971b43c6b3cb83f170d897cfe65049372af7ec76d18062585848ef763
font_01_sfnt_off0000eb02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB02 9920 bytes
SHA-256: 9c1bb234bc24047648d84b45584a8c35a2c3d500d58926bb95282698e3f5626f

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