Malicious PDF — malware analysis report

Static analysis result for SHA-256 0739a6e57eb57ff9…

MALICIOUS

PDF

77.6 KB Created: 2021-03-30 13:13:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: 49708899a78496fcd476e556cf2604f7 SHA-1: 56e89f0cb3896e3dd2115b84a1d76c16a3c57e86 SHA-256: 0739a6e57eb57ff9dc98a60ca22eff420666f6e7f4047f75421ff2b620f28d6c
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to PDF files hosted on file-sharing services, suggesting a link farm designed to attract traffic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document, potentially leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=basic+electrical+engineering+book+pdf+2020 PDF link annotation
    • https://bukudemedu.weebly.com/uploads/1/3/1/4/131483547/7928540.pdfIn PDF document text
    • https://pejadalat.weebly.com/uploads/1/3/0/7/130775017/fobofu.pdfIn PDF document text
    • https://vesevowix.weebly.com/uploads/1/3/3/9/133987154/457f3.pdfIn PDF document text
    • http://kurutog.mygamesonline.org/51780316927.pdfIn PDF document text
    • https://fevegukiso.weebly.com/uploads/1/3/1/4/131482975/28424b7b6.pdfIn PDF document text
    • http://konobemozitu.iblogger.org/56849905303.pdfIn PDF document text
    • https://kosipomorogimel.weebly.com/uploads/1/3/4/3/134307263/kewezijewuba_jewul_dajikigaxene.pdfIn PDF document text
    • https://vaxudiku.weebly.com/uploads/1/3/4/7/134709892/pegapupunanaduji.pdfIn PDF document text
    • http://nonowun.mywebcommunity.org/53318216233.pdfIn PDF document text
    • https://sibomimotilelib.weebly.com/uploads/1/3/4/2/134235458/limawivonafap.pdfIn PDF document text
    • https://zutuvibob.weebly.com/uploads/1/3/1/4/131407898/fomowozuz.pdfIn PDF document text
    • https://pubedazemel.weebly.com/uploads/1/3/4/8/134870130/nabev.pdfIn PDF document text
    • http://duduwinal.22web.org/zazitonelalevenubejikuwif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nividebakotu.rf.gd/xoxoxutafovikurekijisetil.pdfIn PDF document text
    • http://teluroluxeterez.myartsonline.com/rusexumozinanososujaxura.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/introduction_search_engine_optimization.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/kinowimifas.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/bharat_petroleum_gas_agency_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/giorno_piano_music_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/68005575786.pdfIn PDF document text
    • http://safefimij.epizy.com/nikalekofutolibajoxibe.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/aruba_mail_app_android.pdfIn PDF document text
    • http://gawuvuv.epizy.com/fovexoga.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_off0000eec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC0 5848 bytes
SHA-256: af25212eec2ab4b029e2b167fd47e6ad72a935082f75f0bc51c8610601ae0529
font_01_sfnt_off000102b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B7 11044 bytes
SHA-256: 279c660c8a5a3de626ab549e20af25b44398d56e3671cc8e8d83c4d814b248c6

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