Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02021f496553fae…

MALICIOUS

PDF

73.9 KB Created: 2021-09-01 20:36:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 4535c92c9bcb52cda8be3e6895e09e60 SHA-1: 27e2d5a5d4906531e0b8a285b0672f7a5b25fcd9 SHA-256: d02021f496553fae286db4c191913d1a9ddd07cf46e8b3a02ccbfc4b6b4eee29
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress upload directories, indicating a phishing or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further payloads. No scripts were extracted, but the structure and URL findings are sufficient to infer a phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://www.jakketoes.be/ckfinder/userfiles/files/besovarewomasewi.pdf In PDF document text
    • http://malbreil.com/userfiles/file/xikofarusovatifomoku.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/97n15p2dodta1u6rei7uidt6sk/13993544837.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/bfd217858b827f45afee35a47f732e0a/gabenaxupujomepa.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084471e83277---88509669263.pdfIn PDF document text
    • http://elisa5888.com/shopadmin/upload/files/78429379607.pdfIn PDF document text
    • http://fdscience.com/UPFILE/userfiles/files/jaxapoz.pdfIn PDF document text
    • http://nbpcpentecostalchurch.com/clients/65183/File/5911133626.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b6224a3fce9---78688306833.pdfIn PDF document text
    • http://www.klccpa.com/userfiles/file/In PDF document text
    • http://ambcavallon.eu/userfiles/files/20086230880.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/8unl0g3m86bouk4qq0va0ctjhe/24964308418.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/7caa0dbe4050aaafebccd8fb2097dc64/53224403530.pdfIn PDF document text
    • https://kontiko.com/ktkweb3/images/upload/files/44525098814.pdfIn PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc9de61344---ramezezezome.pdfIn PDF document text
    • https://narimasu-chintai.net/jcfiles/file/85310464337.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076d618b581d---fezinojetus.pdfIn PDF document text
    • http://talentfuturesservices.com/sharpinstitute/images/files/27888479863.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/e69f1c7bc594e0d5ce46cf4117056a46/73587629665.pdfIn PDF document text
    • http://knshzj.com/CKEdit/upload/files/pasufosam.pdfIn PDF document text
    • http://noithatlekhanh.com/Images_upload/files/jupoburuzonidesuvesarijap.pdfIn PDF document text
    • https://claudiodituri.it/uploads/jisewijimak.pdfIn PDF document text
    • http://anapro.com/ckfinder/userfiles/files/danulosatetugofupewu.pdfIn PDF document text
    • http://joeun-it.com/userData/board/file/88369765009.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=how+many+yards+is+40+cubic+feetPDF 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_off0000be23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE23 11220 bytes
SHA-256: 6965b856d3a5a436ece2dd7f1209b8b35405329d9f218f722961a2be6d0e2d80
font_01_sfnt_off0000d882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD882 15992 bytes
SHA-256: 9ef1f0f6a6dcbf06e20a16cae2d4cbcff37e03f5a51cd1836c66e45b9420b8c8
font_02_sfnt_off00010190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10190 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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