Malicious PDF — malware analysis report

Static analysis result for SHA-256 baf5e3c8bde0462a…

MALICIOUS

PDF

99.3 KB Created: 2021-02-28 08:01:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0a0075e70d47f76bee796bd19a9f0800 SHA-1: f2534fb5553cfad592f49a38794bf37040e0d5ac SHA-256: baf5e3c8bde0462aaf19a3e10d385d3dfb546845363741a93f785a23eab1fae1
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URL pointing to 'https://soxebez.ru/strik?utm_term=knowledge+of+self', which is highly suspicious. While no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to redirect the user to a malicious site, likely for phishing or to download further malicious content.

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://soxebez.ru/strik?utm_term=knowledge+of+self PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464996/normal_60178cd5bbecd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482860/normal_600c6a46e0f48.pdfIn PDF document text
    • http://artdebug.site/792219100487wj79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459035/normal_6033a64eb3f25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388063/normal_5fec6c7a9cbd1.pdfIn PDF document text
    • http://yourcy.com/85225464348ohbg0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402710/normal_5ff6643edc6c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369762/normal_6007c5d329560.pdfIn PDF document text
    • http://grandov.pro/free_5_paragraph_essay_outline_templatec6jtx.pdfIn PDF document text
    • http://s7hmus.org/bukenitadazuhfhj.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/daraniwekamidir/risixigujokudip.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/92936487561.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/game_psp_brothers_in_arms_d-_day.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/agatha_christie_disappearance_podcast.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/81118291475.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/boston_celtics_pronunciation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/73430783757.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_off00013c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C6D 4492 bytes
SHA-256: aec90e3f0c5d3d415a2751c7a09a00d32e7a9f198f05a5313d412c8245b4c57b
font_01_sfnt_off00014bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BD7 11336 bytes
SHA-256: f02135c469f5abc4408397fbef37ecbce55caf04499a88f21d91c4597aaaa16d
font_02_sfnt_off000171e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171E4 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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