Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8a12cbfb421acd…

MALICIOUS

PDF

63.2 KB Created: 2020-11-27 06:10:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c420f602d7372e72cc6168e86ce8d327 SHA-1: 132ef7736d65765deefafb654ffcbf906f0b5506 SHA-256: aa8a12cbfb421acd2c57966c90a3d752b6cfd55c70abc1b0ddd1ec3c9b3bf4da
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

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://trafftec.ru/strik?utm_term=dougherty+valley+high+school+pool PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416791/normal_5faa306b02c5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393029/normal_5f8eac9f273ab.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/zetare/all_country_visa_passport_photo_size_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2bf0d5d-0127-4309-82e2-a206f45572e2/56001287269.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/96161886994.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9a0ddd4-cd32-47e4-bf51-0c38c12f603a/9000375469.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52871cdb-dd2b-4fff-9026-5a4e40616c50/67947273393.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/introduction_to_chemical_equations_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04cd7e71-45f5-46ce-b7e7-8fd82b2ad9cf/47329918035.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/guia_calistenia_yerai_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/dogenanaro.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/4226113478.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/mikhail_bulgakov_master_and_margarita.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dce1986f-f934-4211-b61a-4b01e9fc55b5/salamadim.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000adf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADF7 5132 bytes
SHA-256: 8701eca271dc6e8ac63bf9ab2ff1c440e241a2b7144970ce6aa90c07c3d45789
font_01_sfnt_off0000bfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA3 10032 bytes
SHA-256: 9cffd08068162a8f7bee7ad83ce763d3655f87024d9fcc187d4b2a5f7c9f8cc9
font_02_sfnt_off0000e204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE204 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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