Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ddc6bd3cd24b388…

MALICIOUS

PDF

69.1 KB Created: 2021-03-19 08:14:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d2d26c8e44b1ad7d7b1ef3e6689c608c SHA-1: 447ce7644724af5ef528b6103fe239c13139b387 SHA-256: 4ddc6bd3cd24b388d17276c3b142c16e3c89f7fadab973654f54a8289045c22e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many of which point to Weebly-hosted PDF files, suggesting a link farm or SEO poisoning tactic. One of the primary URLs, 'https://resalured.ru/wix?keyword=mr+g%2527s+self+storage+mini+warehouses', appears to be a lure to direct users to potentially malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/wix?keyword=mr+g%2527s+self+storage+mini+warehouses PDF link annotation
    • https://wofovado.weebly.com/uploads/1/3/1/8/131871653/jazixare.pdfIn PDF document text
    • https://lobumemimakagom.weebly.com/uploads/1/3/3/9/133999871/0fa7be566bf8e6.pdfIn PDF document text
    • https://nosuzodudoj.weebly.com/uploads/1/3/4/5/134588086/dasixogeb_lenafexotati.pdfIn PDF document text
    • https://federadedeladol.weebly.com/uploads/1/3/4/6/134626130/832821.pdfIn PDF document text
    • https://tuberosaguxe.weebly.com/uploads/1/3/1/4/131437792/5228351.pdfIn PDF document text
    • https://zafubunemajuz.weebly.com/uploads/1/3/5/3/135314528/gefaxu.pdfIn PDF document text
    • https://mufajagirudul.weebly.com/uploads/1/3/1/4/131452858/9318ba5a41a545.pdfIn PDF document text
    • https://womiridiwudawap.weebly.com/uploads/1/3/1/4/131408248/5b5cb6071.pdfIn PDF document text
    • https://gupijevud.weebly.com/uploads/1/3/1/4/131407369/5817193.pdfIn PDF document text
    • https://toripifisesu.weebly.com/uploads/1/3/4/3/134367164/c3edfb985f91cde.pdfIn PDF document text
    • https://mefufexuwi.weebly.com/uploads/1/3/4/0/134019004/metuvegajufed.pdfIn PDF document text
    • https://xozijelotegog.weebly.com/uploads/1/3/5/3/135327018/dedixa-kitaroxefobujip-lufaj-tazef.pdfIn PDF document text
    • https://tupemewona.weebly.com/uploads/1/3/0/7/130775182/zetujujajotoro.pdfIn PDF document text
    • https://woxejisuwu.weebly.com/uploads/1/3/4/3/134322210/meduxa_mozoluzan_dituxuso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tevigotu/latest_trending_meme_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/laperavomubefa.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/como_descargar_aplicaciones_en_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/13th_finance_commission_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/guwopegigumiguvinojozax.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/ohio_guidestone_carnegie.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/zevutarevamiwadop.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d13c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13C 5312 bytes
SHA-256: 2cabf98f569541413ba8d984f38a58cdd0c2ea6be339da949179966463724aac
font_01_sfnt_off0000e347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE347 10496 bytes
SHA-256: ce5958f70d467bd77e035fed8e6fd59b72f74b5aa951a9b14a1565d239faa131

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