Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eec7555bc22c9ba…

MALICIOUS

PDF

100.8 KB Created: 2021-07-24 14:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 243233235dbcccf888a5ed4ae43fcdae SHA-1: 5bd7affe20c0ffed15a9c8b1da456c4e2d8929ba SHA-256: 0eec7555bc22c9ba2eee404298294bcf26eda6ccb30dcfe723ba3061378e94db
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of external links and the overall structure align with a spearphishing attachment attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cd3d82bb3f---voxexexasatejetinudo.pdf In PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/nppua5dpm32n9c8j56c8v94ni0/zadixolapevevizawebul.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/b581616c0a6563adb167ba14cba442d3/86833461748.pdfIn PDF document text
    • https://instalacje-elektryczne.net/ckfinder/userfiles/files/67403053945.pdfIn PDF document text
    • https://balajitutorial.com/admin/userfiles/file/tadezaregej.pdfIn PDF document text
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/41d1b338c6e83bd536a14f90d9d86b62/kasegimurasul.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16074a4e234f33---71283503720.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c85064695---bunufusodupuzodazarufeg.pdfIn PDF document text
    • https://fertilizerproductionprocess.com/d/files/21768050341.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/03e064f52f3d796e3ccf607b9e0ee4b7/86985911991.pdfIn PDF document text
    • http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/2hbkspojbb897ghh5jejtl2nv1/busidobimekinufezep.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/16078b98e49e4c---93985110998.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8b20fb3d2a---33563860801.pdfIn PDF document text
    • http://arch-teh.com/pic/userfile/50046058483.pdfIn PDF document text
    • http://clinicaveterinariacittadivignola.com/userfiles/files/xorudusodegufod.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/gizapedifigomerabuxo.pdfIn PDF document text
    • http://domusanna.it/userfiles/files/83686214297.pdfIn PDF document text
    • http://rotang.net/userfiles/file/saxikuzumi.pdfIn PDF document text
    • http://suarezbeltran.com/aym_images/files/32492518490.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/25521660666.pdfIn PDF document text
    • http://jouezadomicile.org/clients/4/49/49939bf6a151252ba1adfe53d1befa29/File/4816803669.pdfIn PDF document text
    • http://garderoba.sk/images/_file/24119020281.pdfIn PDF document text
    • https://aprilboya.com/userfiles/file/87245457417.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/fj8b5obhik6e76pauq3mr3n9v0/30285165663.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076298046477---davadevetu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff00a0218a---77142523761.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=honda+eu2000i+generator+specificationsPDF 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_off00012255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12255 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013a67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A67 18324 bytes
SHA-256: 4254bc6557c0bec118f805e70ef9c3ce678c93c0cd77a226d32517d9d5bba734
font_02_sfnt_off00016b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B34 11080 bytes
SHA-256: 1307471e5780640955b11fdfb38dd365731ee03f4c88852d1f793c88a23c6734

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