Malicious PDF — malware analysis report

Static analysis result for SHA-256 d85711137296c12a…

MALICIOUS

PDF

200.0 KB Created: 2021-02-27 04:56:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 0017dfd2b613befb581e86a7099b0344 SHA-1: 0d5b33b72ae4f35888f123a849d7b803b01d8c98 SHA-256: d85711137296c12add973332368c73c23dce2d26bf2d9a32b0843489b48dafbd
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'botokaw.ru', which is likely used to deliver a secondary payload or conduct phishing. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to exploit the user's trust by luring them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9881

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://botokaw.ru/123?utm_term=persona+3+concept+art+book PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479237/normal_601da8123f020.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/75174280852.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/2809470730.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366961/normal_601379ce3be60.pdfIn PDF document text
    • http://vinakubos.22web.org/philips_aquatouch_razor_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404741/normal_600f5dc38931f.pdfIn PDF document text
    • https://xodebizig.weebly.com/uploads/1/3/2/6/132681497/8358071.pdfIn PDF document text
    • http://suvuxivenorum.mypressonline.com/cronbach_alpha_means.pdfIn PDF document text
    • https://bulugigedi.weebly.com/uploads/1/3/4/7/134714886/7359979.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413865/normal_5fe1c3bdac1d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zupitatip.atwebpages.com/anatomy_and_physiology_coloring_workbook_answers_chapter_6_muscular_system.pdfIn PDF document text
    • http://wavazazefeka.epizy.com/20251813150.pdfIn PDF document text
    • http://namutogenasokab.epizy.com/tuzebatof.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/gotad.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/navien_240a_dip_switches.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/32153129899.pdfIn PDF document text
    • http://gipomafusabakix.rf.gd/dazukigelugokekiw.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/74635806521.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/duman.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/bibaledajeliga.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024507.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24507 41156 bytes
SHA-256: 9ddfa0292132751f55b13b205c26fc655945739d10f93168b0710fe1853e4a45
font_01_sfnt_off0002c2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2F7 5264 bytes
SHA-256: 0581027f250fbd577099a0972dbe4f106b37268db49bb398a7d1537bb205fe85
font_02_sfnt_off0002d4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D4E8 12028 bytes
SHA-256: 18413cac613b5ea6e2684b56e8e5e08871fecd8bbfcef9f9f3efc990638ca7e5
font_03_sfnt_off0002fc8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC8C 16060 bytes
SHA-256: 9044de52cb519c95ee67ddce32ea384e940c5cdde4d4dd99e22aebcefe2ca402

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