Malicious PDF — malware analysis report

Static analysis result for SHA-256 06eca1d43bb20264…

MALICIOUS

PDF

80.3 KB Created: 2021-03-19 11:07:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3578f75fb7bc139439fbfc5cb58f8543 SHA-1: 7cb615bdc62db0d7c53a51782e8ddd41c89c7be9 SHA-256: 06eca1d43bb20264387a6289134ccb408e6ec3ff5ccb743a0a97ebb2f0c63cb0
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO spam operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL and the PDF's structure are consistent with a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/award?keyword=dise%25C3%25B1o+de+cangilones+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375083/normal_5ffde37cd43e2.pdfIn PDF document text
    • https://wemawamirake.weebly.com/uploads/1/3/5/9/135959397/5e6e3bec1f240ac.pdfIn PDF document text
    • https://nopuxexej.weebly.com/uploads/1/3/4/4/134498230/10b43.pdfIn PDF document text
    • https://zixozuji.weebly.com/uploads/1/3/1/4/131454221/d98e618dcb3.pdfIn PDF document text
    • http://jukexufepezaj.22web.org/sims_3_cc_modern_furniture.pdfIn PDF document text
    • https://palokeligiz.weebly.com/uploads/1/3/4/4/134496709/b162d87b5bbc1c.pdfIn PDF document text
    • https://laximazerafa.weebly.com/uploads/1/3/4/2/134235816/79366b95.pdfIn PDF document text
    • https://suzotavuni.weebly.com/uploads/1/3/4/7/134765747/88e63e7.pdfIn PDF document text
    • https://javufivupa.weebly.com/uploads/1/3/4/3/134349262/4597bfb5d.pdfIn PDF document text
    • https://wamazuwo.weebly.com/uploads/1/3/1/3/131380988/devoxogimoto.pdfIn PDF document text
    • https://zikegebuner.weebly.com/uploads/1/3/4/8/134856814/donezuxawoboxem.pdfIn PDF document text
    • https://norofuzalugegok.weebly.com/uploads/1/3/4/8/134882219/pajagizurujixop-vizijijupal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406464/normal_600b57163516e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484156/normal_602c23f5cc30b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xurixado/saad_lamjarred_song_ghazali.pdfIn PDF document text
    • http://jigiwema.epizy.com/28517915787.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/jikedarigajukafulij.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/35653860792.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/mopevedazoguturoje.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/44997374273.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/41814037897.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ece8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE8 5148 bytes
SHA-256: 41a28c418bc95337d921cd3970ef5e743be702b7cd500169fc88cb2a869a0e2c
font_01_sfnt_off0000fe35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE35 11844 bytes
SHA-256: 43f5340199474782b7c5af3f97400c4374510e4f8f9ff6f37dc3c46892a597e0
font_02_sfnt_off00012431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12431 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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