Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9de2b7a082864d9…

MALICIOUS

PDF

71.8 KB Created: 2021-02-27 05:12:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 98b0e23257a83cedfb7aeebe435ae087 SHA-1: 44d3a28072784bdbbdab6e159a4e4c30de3bf3a3 SHA-256: a9de2b7a082864d95675bf74b5835f662597931ee5b8cf3445c928d267afdb53
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'maypoin.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', suggesting it was generated by a tool rather than a standard document editor, and the embedded URL is presented as a download link for Logitech Saitek X52 Pro drivers, a common lure for phishing.

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://maypoin.ru/award?keyword=logitech+saitek+x52+pro+drivers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369638/normal_5fe6ce80613bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390383/normal_60162f18b1f58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450338/normal_600fd3ef382a2.pdfIn PDF document text
    • https://cdn.sqhk.co/sanevujaguda/ibgcCif/rubber_duck_shoes_size_8.pdfIn PDF document text
    • https://cdn.sqhk.co/wofunukasu/jfEhahd/potuwodozosisivuj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380867/normal_6025cc97036e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461525/normal_6013069289ec8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/waxegatulo/7531978578.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/assets_android_get_file.pdfIn PDF document text
    • http://rajemezipuz.rf.gd/1865344091.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/31643144387.pdfIn PDF document text
    • http://xapimiwosusuv.epizy.com/gafalepuxukefegot.pdfIn PDF document text
    • http://xabuvale.epizy.com/kirefutun.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/99346643340.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF9 5376 bytes
SHA-256: 4cf13cf2b5d0e22f4defe1c1d127a989e9065b8e91c6571460e646f3f2ba3523
font_01_sfnt_off0000df6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6C 10464 bytes
SHA-256: 139bbce7d888ab1042e2b3ca0b8859c7682b3cef57d3613c5c9782ff8dac98a8
font_02_sfnt_off000102b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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