Malicious PDF — malware analysis report

Static analysis result for SHA-256 1673dd98eb2d3069…

MALICIOUS

PDF

78.6 KB Created: 2021-02-18 15:03:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 3dc9cc67005745590f1f8f7b891f52a2 SHA-1: c479bb1dd166f795d451b197cfa2cbf676816f0e SHA-256: 1673dd98eb2d3069d7ac62ab2d1a24f76aaada4f44745702b7a0960c8ca2bc59
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that point to suspicious domains, suggesting it's used to redirect users to phishing or malware distribution sites. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure, likely employing T1059.007 if JavaScript was used to obfuscate the redirection.

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://jottigo.ru/wix?keyword=que+es+una+nota+periodistica+para+ni%25C3%25B1os PDF link annotation
    • http://nat-yoga.space/9133583890537965.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456686/normal_601548342d4eb.pdfIn PDF document text
    • http://naturalm.space/can_you_marry_your_2nd_cousin_once_removediymcn.pdfIn PDF document text
    • https://gotedimonov.weebly.com/uploads/1/3/4/7/134761190/7238256.pdfIn PDF document text
    • http://visionnew.xyz/63439117162cegkg.pdfIn PDF document text
    • http://gradstroy.su/tikabonekowupang2ts.pdfIn PDF document text
    • http://asia.kiwi/pobeporuwikevofevajajuvubkg42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451565/normal_5fc847ab1e7c7.pdfIn PDF document text
    • http://devgm.design/58786610603hojik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375199/normal_5ff659d45e1b4.pdfIn PDF document text
    • http://repair-telefonov.ru/57038622370j3nkm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494657/normal_602ba3d8278db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383678/normal_5ffb8ebc594cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367635/normal_5ff91fc167f92.pdfIn PDF document text
    • https://jedexapotup.weebly.com/uploads/1/3/4/4/134472831/musetesuro_siduwano_fobapukewawi_fapugelozam.pdfIn PDF document text
    • https://bunutawopuzo.weebly.com/uploads/1/3/4/8/134868528/nosuvu-zefoxan-gazumimolo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485016/normal_5fd822af1a011.pdfIn PDF document text
    • http://goods-amzon.com/south_carolina_permit_test_study_guide7k457.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447880/normal_5ffb84fddb15f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF297 5308 bytes
SHA-256: fbfd68ca7b7f94899bf3b60c68f63672612b82345cf6ddb36bd8c6b992aa7579
font_01_sfnt_off0001046f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046F 11756 bytes
SHA-256: ce2de6073c8b783b42b715eb040fe8cbf3093340ff5dacc4b2caeb6549f283e4

Open this report in the interactive analyzer, or submit your own file for analysis.