Malicious PDF — malware analysis report

Static analysis result for SHA-256 06cd780976f2a3ad…

MALICIOUS

PDF

69.4 KB Created: 2021-09-25 11:35:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: f3b2ce1ce154ffd6b827088f10578633 SHA-1: 229737c077efb1f9392715c5bd5b3d45aa7cfee1 SHA-256: 06cd780976f2a3ad5cd913f9948a39670d9e7df5ac417e48308cd57d1217cc7c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm on disposable hosting, with numerous embedded URLs pointing to potentially malicious or phishing sites. The PDF structure and embedded content suggest it is designed to redirect users to external, untrusted resources, likely for phishing or scam purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://www.diplomat2014.ru/ckfinder/userfiles/files/sanego.pdf In PDF document text
    • http://travelspace.pl/userfiles/file/goxalibexizejesibebor.pdfIn PDF document text
    • http://amdind.com/userfiles/file/19570636236.pdfIn PDF document text
    • http://kaiyudachem.com/filespath/files/20210921213724.pdfIn PDF document text
    • http://altus.pl/userfiles/file/wawopadexunijatufobafa.pdfIn PDF document text
    • http://banglatalkies.com/dynamic-images/cms/file/kadazikotenorotasuk.pdfIn PDF document text
    • http://bugaboo-buffalo.eu/UserFiles/File/76799832298.pdfIn PDF document text
    • https://miminku1.com/contents/files/26784678084.pdfIn PDF document text
    • http://easyreturn.store/userfiles/file/73643850199.pdfIn PDF document text
    • https://desmar.cl/gestion/admin/images/upload/file/bunimitometumawunafumugob.pdfIn PDF document text
    • https://www.ksmt.edu.np/assets/ckfinder/userfiles/files/gasuriwafeteporode.pdfIn PDF document text
    • http://schodylux.pl/userfiles/file/jedivonokekolenovo.pdfIn PDF document text
    • http://dytac.hk/userfiles/sixumuluf.pdfIn PDF document text
    • https://sportcity.bg/webroot/img/content/files/96006266363.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/06020307dc97f5e84231e70657120c52/tepodiwiwugirejilito.pdfIn PDF document text
    • http://edins.net/userData/ebizro_board/file/55596942183.pdfIn PDF document text
    • https://minjar.mebel18.com/uploads/files/roxivapedajidamafodarizo.pdfIn PDF document text
    • http://johnmarzillier.com/ckfinder/userfiles/files/filowubadizetazivedebejez.pdfIn PDF document text
    • http://parbatsamajjapan.com/img/files/files/87123030804.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/161432a2d0b846---kuxixajuvatadonanujijozam.pdfIn PDF document text
    • https://nirmalujjwal.com/public/ckfinder/userfiles/files/korasunepikalepekamekivix.pdfIn PDF document text
    • http://meteosputnik.ru/userfiles/file/82764588443.pdfIn PDF document text
    • https://mmtours.si/uploads/89974265112.pdfIn PDF document text
    • https://aademvegabaja.org/images/image/14864742195.pdfIn PDF document text
    • http://vitccorp.com/uploads/userfiles/file/vogowuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=best+games+for+android+low+mbPDF link annotation
    • 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_off0000b0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0E1 15044 bytes
SHA-256: 8251b519bd36cc3d4282ec0a62f050a48c9927aac0dd773ab6570e54f971d20e
font_01_sfnt_off0000d653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD653 10976 bytes
SHA-256: ecc0baa4c09e8f9bdd8c491e49ee8dc75632c7f01279a04cecd1325293dcf3a2
font_02_sfnt_off0000efb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1