Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4deb89f05a6853d…

MALICIOUS

PDF

82.2 KB Created: 2021-03-01 23:34:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 56737a0c7b9436d0226f602205b4cc3c SHA-1: d3ad495ee16945c86b54b5edb87c18477a5219cf SHA-256: d4deb89f05a6853d9e6b65f82fd4775ac37a26ef9ea13ae93f53fafa15d5a9d8
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded external URI pointing to 'zajinet.ru', which is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest the document is designed to redirect users to a malicious site.

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://zajinet.ru/strik?utm_term=diablosport+intune+i3+tuner+%252814-16+5.3l+silverado+1500%2529 PDF link annotation
    • http://xelasurugopu.mywebcommunity.org/wozorunevitixedovigu.pdfIn PDF document text
    • http://sosiwuro.iblogger.org/how_to_play_brawlhalla_cross_platform.pdfIn PDF document text
    • http://joritirumag.mypressonline.com/home_design_apps_for_android_phones.pdfIn PDF document text
    • http://zugapuvu.mywebcommunity.org/17193319455.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452852/normal_602126c4ea057.pdfIn PDF document text
    • http://topukovatawosu.sportsontheweb.net/kusegumozedezotume.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421934/normal_6033a118b45a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_601d369e5ab46.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kefodek/arch_linux_arm_raspberry_pi_3.pdfIn PDF document text
    • http://ginisanekuxowo.epizy.com/tell_me_about_yourself_in_interview_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/fraction_to_decimal_conversion_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/canary_wharf_group_sustainability_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/34461074187.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/10252554414.pdfIn PDF document text
    • http://gakifok.rf.gd/arabic_translator_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/61259957679.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/51232435839.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_off0000fe98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE98 6096 bytes
SHA-256: 38189be89647c8b81ec2b86cca28f871c4c15812729406141a8ed1384fb58237
font_01_sfnt_off0001138e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1138E 11476 bytes
SHA-256: 47334d21e0b4ee9a5af59d5b038266dbbb26b3a8e8f08c004605d6fb2abc7d5f

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