Malicious PDF — malware analysis report

Static analysis result for SHA-256 01cfe23e2f977ef3…

MALICIOUS

PDF

77.5 KB Created: 2021-04-06 10:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 562d03fcb285d848aeeb3161f008a241 SHA-1: 9aa86aeffc2530d25561bdbade1b6453ad4c6acc SHA-256: 01cfe23e2f977ef39cdb2bc809dccda62fd0c64823502acf6334f3d7a10d1c62
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://gimoguvi.ru/wix?keyword=bukvar+free+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373509/normal_60033cdc6dd19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379722/normal_5fe209cdcaa6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393370/normal_604218863b705.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480744/normal_60135c0c15575.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426814/normal_604a21cea7eb0.pdfIn PDF document text
    • http://rikafitamedad.medianewsonline.com/60429829267.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486548/normal_606261d963e13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366389/normal_5fdc2835eb138.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494674/normal_60625ceb610d7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373776/normal_60089819a5785.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482218/normal_5fda4e0723293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448735/normal_5fd79d1a434d6.pdfIn PDF document text
    • http://neridofufuleteg.scienceontheweb.net/fatutitawug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425255/normal_5ffb20348cd84.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/resixexi/believer_s_authority_free.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/robofagarosizesu.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/axa_annual_report_2018.pdfIn PDF document text
    • http://neketepa.myartsonline.com/71461752547.pdfIn PDF document text
    • http://suwuriru.onlinewebshop.net/great_and_mighty_is_the_lord_our_god_chords.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_off0000eb46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB46 4996 bytes
SHA-256: 99090c60e56bbb2a9417ee5ec7cdef253794fdfcd0b95c0b81555bf2bd7746fa
font_01_sfnt_off0000fc63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC63 14148 bytes
SHA-256: 41cf804d8cd997b87c5c20676d8d71d95e0a35efc3383f357d82cd02585e5789

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