Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a8de9a54ec54dd4…

MALICIOUS

PDF

77.5 KB Created: 2021-02-15 00:36:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 3535678d551ae5134e53d07c78c77fc8 SHA-1: c084f5aea813ef7897ac66253c6c1e8fc5b9c034 SHA-256: 6a8de9a54ec54dd4ef00ebef07c1795b7104a59c32d65782c8f0e8c4008e1ec0
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URL points to a suspicious domain, likely a phishing site. While no scripts were explicitly extracted, the nature of the detection and the presence of an external URL suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=sample+letter+to+opposing+counsel+regarding+discovery PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4383138/normal_5fe3e9037aa44.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450141/normal_5fff2a7c66911.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476577/normal_5fcdfde12406e.pdfIn PDF document text
    • http://sy0n.icu/walden_thoreau_deutsch86j7m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417030/normal_5fc85adfa2d25.pdfIn PDF document text
    • https://cdn.sqhk.co/xiroxozalal/3ijgehh/91090999694.pdfIn PDF document text
    • http://ulekschool.online/walavobejodukasevipiroponj3r1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_5fd90fb2b030e.pdfIn PDF document text
    • http://meblik.su/bialetti_manual_coffee_grinder_settings1kdz2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424011/normal_600f44c6591eb.pdfIn PDF document text
    • https://cdn.sqhk.co/fajoliteve/wukhbif/29522366900.pdfIn PDF document text
    • http://vsspb.ru/nadaxafawufurikexutexodavao1v.pdfIn PDF document text
    • http://lemovifi.iblogger.org/mosof.pdfIn PDF document text
    • http://centerverifybadge.com/62622293054m8snx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xeregolipota.epizy.com/cluster_headache_prevention_guidelines.pdfIn PDF document text
    • http://mezubivedoxida.epizy.com/rurix.pdfIn PDF document text
    • http://sanemogoxidiwus.epizy.com/jojerikuderex.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_off0000f22f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22F 5656 bytes
SHA-256: b8a8a390eec3affb64b672811a43bc4b43f4c3cbca3a518a04718c3863eede11
font_01_sfnt_off00010567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10567 10196 bytes
SHA-256: cec53bd3fc2558bb9aa774b1cc040f8c33c00dffcd16c355466ee25505ca045f

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