Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2175bcdec458439…

MALICIOUS

PDF

71.3 KB Created: 2021-02-23 17:18:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 0a434b3da8fe67df698a3a6b1be40326 SHA-1: 4743c55d23254151ec9d57eaf2b545aa2b8aeb61 SHA-256: d2175bcdec458439559d49b4e38748c53be49b48f561139a880f93ac4eb2f37d
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'baarspo.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to connecting speakers and the URL itself, suggesting a lure to trick users into clicking the malicious link.

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://baarspo.ru/strik?utm_term=how+to+connect+logitech+x-530+speakers+to+pc PDF link annotation
    • https://xisezuvu.weebly.com/uploads/1/3/4/0/134096300/2de8ffd81.pdfIn PDF document text
    • https://gazuxupoje.weebly.com/uploads/1/3/4/1/134108966/d7904512.pdfIn PDF document text
    • https://jetujonupukoj.weebly.com/uploads/1/3/1/1/131163664/2e1090044df1832.pdfIn PDF document text
    • https://petapizegu.weebly.com/uploads/1/3/4/3/134327096/nosetezewote.pdfIn PDF document text
    • https://vuzavadakugodo.weebly.com/uploads/1/3/4/8/134857872/rujutibi.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/wujodibu/50334916923.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/nomination_form_sbi.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/chattahoochee_national_forest_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/full_blood_count_report_details.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/angel_has_fallen_full_movie_online.pdfIn PDF document text
    • http://lolekubem.epizy.com/la_celestina_resumen_por_capitulos.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/adp_authorizer_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/33285138948.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_off0000d5b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B2 5840 bytes
SHA-256: f2b26baee4328d06d22780db49db58df5c0805906565c430a14bc3d1c7888e33
font_01_sfnt_off0000e9b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B2 11620 bytes
SHA-256: 5f9a2fdb0306e6b0023870351fa1d4b84f72f8661dcb3718b2aa3365fec8a7a8