Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fde7e9fd7255ed…

MALICIOUS

PDF

83.0 KB Created: 2021-03-16 05:22:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 9c65f70ea51c738dd587238e92b20f8d SHA-1: 12b81c50b35d140c0d44fd43251ab0df37006f61 SHA-256: 54fde7e9fd7255ed878cdaad410a7f8d4aeaee1056109ead8ab50fea44e4e4f6
156 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing or SEO poisoning attack, leveraging a fake user manual lure to direct users to external websites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/award?keyword=altivar+12+user+manual+pdf PDF link annotation
    • https://jobeluraxofedir.weebly.com/uploads/1/3/4/3/134317239/muxujafes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481058/normal_5fc9f4abf1f74.pdfIn PDF document text
    • http://tokidijafa.22web.org/oracle_12c_download_for_windows_32_bit.pdfIn PDF document text
    • https://lejumapufa.weebly.com/uploads/1/3/4/6/134688193/wuporesexibepipo.pdfIn PDF document text
    • https://wexemexaxixu.weebly.com/uploads/1/3/4/7/134709907/f9bb2dca630bb4.pdfIn PDF document text
    • http://dukepiweg.iblogger.org/vuxekedexobavekof.pdfIn PDF document text
    • https://nebemono.weebly.com/uploads/1/3/4/3/134331812/934db856af2.pdfIn PDF document text
    • https://zajodufukotu.weebly.com/uploads/1/3/1/8/131857357/5720df7fda33c.pdfIn PDF document text
    • https://nobokoxevukaj.weebly.com/uploads/1/3/4/7/134755509/fb133.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418175/normal_5fe47e73239fd.pdfIn PDF document text
    • https://vopasigujar.weebly.com/uploads/1/3/0/8/130813381/fugeramavoba-gulibuwagi-jifujabaxok-niwineli.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484618/normal_5fc816e256946.pdfIn PDF document text
    • https://likixulojuxe.weebly.com/uploads/1/3/4/3/134386003/xamoxatepu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8533cbf3-c0d6-400c-bdf8-8ca38cf0242b.filesusr.com/ugd/135178_6381c306112544ccb4a27c5b9a2cf8c8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mogedozara/pisakixoduxazoz.pdfIn PDF document text
    • https://2a26c5f8-c4f8-4af8-830b-7e2c9961bd8e.filesusr.com/ugd/2e4362_6bde4877744d46279b1a761e58c1bb84.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/poresi/versiculos_sobre_orar_en_el_espiritu.pdfIn PDF document text
    • https://5a6df620-610b-4d6f-8f1b-71e936bb70bc.filesusr.com/ugd/1f5cef_5f2d904233404960999197bea550ef83.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/maxukama.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/lolefikeviba.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/best_free_weight_watchers_apps_for_android.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_off00010661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10661 5420 bytes
SHA-256: e5617aadb416b53121257e387063c4c8aba89e0372f3e77af3dc77f0f5eedbbb
font_01_sfnt_off000118c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118C5 11192 bytes
SHA-256: 96a42569671e7094b4e5b3addf9826bb6670bbd4f9b56301d19924eeb64e4deb

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