Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed25dbaa58ba0575…

MALICIOUS

PDF

64.1 KB Created: 2021-02-26 15:45:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80ed30de6f5b005afc199164cfe03895 SHA-1: d7ecd42f6e2d2d9ca6b0716614411aab1bb2cb65 SHA-256: ed25dbaa58ba05755ed6d34ed51fc2873c9de86de7392c2d0258419ba27accdb
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL, https://jacksth.ru/wix?keyword=into+space+2, suggests a phishing or credential harvesting attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are commonly used to redirect users to malicious sites, often as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/wix?keyword=into+space+2
    • http://idealica-ufficialeitalia.website/68596173977adryr.pdf
    • https://xukotonaxi.weebly.com/uploads/1/3/1/4/131453431/jonatezoros-sukag-sufitizune.pdf
    • http://bixaxivajujojar.mypressonline.com/grohe_kitchen_faucet_leaking_at_handle.pdf
    • http://organic100.fun/bamavebezosebunujiralaja4pi.pdf
    • https://menuvinowit.weebly.com/uploads/1/3/5/3/135320060/pudabag-domofetosoruko-butorij.pdf
    • http://beririka.scienceontheweb.net/sarebiwililazijunub.pdf
    • https://static.s123-cdn-static.com/uploads/4393208/normal_5fcbac1287103.pdf
    • https://static.s123-cdn-static.com/uploads/4449992/normal_5fdecaf258dc3.pdf
    • https://cdn-cms.f-static.net/uploads/4418747/normal_5fdc8c0048148.pdf
    • http://kushtanash.ru/how_to_turn_off_summer_baby_monitorhslsy.pdf
    • http://cooldomen.space/3577485691qs56g.pdf
    • http://loduwij.scienceontheweb.net/xarunafezovijolipag.pdf
    • https://cdn-cms.f-static.net/uploads/4385207/normal_6009b00f59884.pdf
    • http://beach-fruit.fun/wutozirirituzozijzjiz6.pdf
    • https://nobakunifiximup.weebly.com/uploads/1/3/5/3/135310199/wenumipetitujiw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wulibazosuxib.onlinewebshop.net/lawometufowa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c180.bin
6425241ac239efd022b8108688a5984ecabac97cbd3af9c3fd79877417248d74		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC180 4868 bytes
font_01_sfnt_off0000d224.bin
91ccc594caee99284e105f8bf4223baf3468fc8a2d26c43d46d22643475ea8bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD224 9932 bytes

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