Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a7b36d86f1d069c…

MALICIOUS

PDF

82.0 KB Created: 2021-04-16 07:24:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9e8b61b7ae2c6cdfb7372aaba200b9bd SHA-1: 71156013c3759443b4a6371147cb22260fff0862 SHA-256: 0a7b36d86f1d069cd3f9e52c3bd3b96ebc2df89723bc9797a6a8f87d9d731d0a
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/strik?utm_term=half+blood+prince+spell+book PDF link annotation
    • https://cdn.sqhk.co/keropolor/hfjhqhf/34515777883.pdfIn PDF document text
    • http://fuvisetitisenon.mypressonline.com/62129062827.pdfIn PDF document text
    • http://vopugixeroramox.medianewsonline.com/tecnologias_de_la_informacion_libros.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489402/normal_602b4c81977b5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426073/normal_6005e93096cee.pdfIn PDF document text
    • https://cdn.sqhk.co/nudavede/jfXmjbH/93962515920.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/fvhgMjg/vubepel.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafori/xjbjahb/clumsy_ninja_gameplay.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/vovopafubipu/stihl_ts420_for_sale.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/sciatic_nerve_or_piriformis.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/hypertension_guidelines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/nisugamezafijiwebovapik.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/stone_island_t_shirt_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/22017406013.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/free_esl_worksheets_grade_6.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/filopovexazodonesejow.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/rancilio_silvia_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/943f17d7-9126-4e2e-b8f0-00ab09e7e226/bitagor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6be45257-0b59-44e8-9809-315b6936ca65/83965510102.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_off00010115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10115 5316 bytes
SHA-256: 79fab811e0fdec120bfdc5405e2953f03273d33c7b06d91bfce8bb88ba075244
font_01_sfnt_off00011331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11331 11624 bytes
SHA-256: 61292a6ad8b52e06aa09ac8fab96098816d7d85239d58ad96e74b761bdb56092

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