Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02dad382bfce77e…

MALICIOUS

PDF

74.1 KB Created: 2021-09-15 20:57:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: eb83fa5ced3891457a00e06e9c21de53 SHA-1: 13d70d4a4d688e77a713af31fcc4459dd69f59a7 SHA-256: c02dad382bfce77e33eae5693792fa1965cfc5608ba2329d28fed0490e81854a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. It contains numerous embedded URLs pointing to potentially malicious domains, suggesting a phishing or malware distribution scheme. The presence of PDF_URI and EMBEDDED_URL heuristics indicates the document is designed to redirect users to external content, likely a second-stage payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://synerhu.ru/uplcv?utm_term=find+my+device+redmi+8 PDF link annotation
    • https://ourlady-schools2.com/userfiles/files/50737416894.pdfIn PDF document text
    • https://bdblue.com/ckfinder/userfiles/files/85093890140.pdfIn PDF document text
    • http://trans-serwis.com/userfiles/file/6598967189.pdfIn PDF document text
    • http://everintelconsulting.com/upload/file/202109012302418774.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/xenujezik.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/wenewowoxatususejafefivap.pdfIn PDF document text
    • http://deaprogettazioni.it/userfiles/files/69669538794.pdfIn PDF document text
    • http://bio-scan.com/userfiles/file/79434777482.pdfIn PDF document text
    • http://caacoding.net/wp-content/plugins/formcraft/file-upload/server/content/files/1614173f2263fc---75441396434.pdfIn PDF document text
    • http://linza-market.ru/upload/files/81995376958.pdfIn PDF document text
    • https://gloriamus.org/Uploads/userfiles/files/33672599955.pdfIn PDF document text
    • https://8foro.exceltur.org/exceltur_nuevo/ckfinder/userfiles/files/madoko.pdfIn PDF document text
    • https://sluganarodu.org/userfiles/files/75615244075.pdfIn PDF document text
    • http://infiniti.e-library.tw/uploads/files/rewatitono.pdfIn PDF document text
    • http://inwama4.vn/webroot/img/files/jubawowelowefufizoda.pdfIn PDF document text
    • http://veterinariogiardinelli.it/userfiles/files/17888583257.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/5ba24d4d0c2c0500f92e44079035affd/77666265622.pdfIn PDF document text
    • http://blackhorsesc.pl/userfiles/file/13781353747.pdfIn PDF document text
    • https://sts-cct.com/app/webroot/userfiles/files/28338895001.pdfIn PDF document text
    • https://letajicikoberce.cz/userfiles/file/dafejavirajuxoxipi.pdfIn PDF document text
    • https://sushixusa.com/userfiles/files/dubamejerugovizujepujikav.pdfIn PDF document text
    • https://jasz-pap.hu/UserFiles/file/57848782051.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC054 10300 bytes
SHA-256: cef4a111f1ec077ebb8545d93ef2ccd9ead988d6a465870bdc005cc212dd7db9
font_01_sfnt_off0000d771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD771 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ef83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF83 16980 bytes
SHA-256: ea9c93655ab22c6aa140aa0282d1a5945ab617d3812b16210e83c6830f5ce769

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