Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d024179b3c979dd…

MALICIOUS

PDF

86.7 KB Created: 2021-06-26 03:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 091d9bf6d2553306febfafa4498bcaa6 SHA-1: 1bf435d25a66cba5d53722bb563ec6b607df3f67 SHA-256: 3d024179b3c979dd0f11ff1eba6f10287868c380a8cc542c2cc052f7ebe08d54
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML and ClamAV as malicious, indicating it likely serves as a phishing or trojan delivery mechanism. The presence of numerous links to potentially compromised WordPress sites and disposable hosting suggests a link farm designed to distribute malicious content or manipulate search engine results. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 http://abwingssuffolk1.com/uploads/files/69693621555.pdf In PDF document text
    • http://xboxheerlen.nl/userfiles/file/37848108113.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/nabunesilewuperok.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609e030ce8229---rugududasuliveliliduwob.pdfIn PDF document text
    • https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/dadc36b5576655d7b902b55b305e61b6/78760059317.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe99824a6c---dujavozurivuro.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160905387436d8---lodikul.pdfIn PDF document text
    • http://yourtruck.be/upload/ckeditor/file/69872905948.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd8a0abbac---4043499841.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/88470243035.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608b301289bca---fekojuzuf.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087de19c2cb5---15764900748.pdfIn PDF document text
    • http://congluc.com/upload/files/figotujuvanipa.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/a72c69e24cae8083684b1ca83e4dbaa1/62909452820.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/9944ce4e8b74ecc79029d24311aaf7fc/22116097527.pdfIn PDF document text
    • http://braintradingbcn.com/wp-content/plugins/super-forms/uploads/php/files/e5d33da27316972844148cf6bdd1698b/64622865747.pdfIn PDF document text
    • https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608bd9f55c0d2---73563800471.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/8b23c47f66b207d7c53fb977e1d181e0/52021573891.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/601c852fada8d7c8e23ee48d8b405b92/89502816494.pdfIn PDF document text
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16070d0c46f864---73278385878.pdfIn PDF document text
    • https://rosycaffe.com/file/napelukewufusoje.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b64407b984c---4568638502.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6beb57638d---ravezewijefewader.pdfIn PDF document text
    • http://x04ydivan.ru/userfiles/file/22601796315.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=shadow+fight+hack+everythingPDF 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_off0000edb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB0 17644 bytes
SHA-256: c9581760e3f00acf52ef494c404bd524cbbe1335047d06198dda29e14ef83864
font_01_sfnt_off00011bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BCF 10972 bytes
SHA-256: 83c06c91ffa353085535a2045f564cacb7dfd9553b5e99978b531709be7dee0e
font_02_sfnt_off00013527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13527 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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