Malicious PDF — malware analysis report

Static analysis result for SHA-256 f28433c061241e1f…

MALICIOUS

PDF

65.0 KB Created: 2021-02-23 06:54:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 83a0698e83092033cd98289a31736c82 SHA-1: 146740db439ad766c23d96501a1f6870c2b2c63e SHA-256: f28433c061241e1fb0d466dc6c470251691046b82181963d3275af938a2636e2
96 Risk Score

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://baarspo.ru/wix?keyword=dubin+ekg+pdf+srpski PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4380226/normal_5fe3f73b57dc6.pdfIn PDF document text
    • https://cdn.sqhk.co/devuzemalut/hhcFlge/mindspring_imap_email_settings.pdfIn PDF document text
    • https://cdn.sqhk.co/keridola/jfWNig2/retroflag_gpi_case_cartridge.pdfIn PDF document text
    • https://cdn.sqhk.co/jisaside/ihfjCpg/64372692271.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/hrQfeek/tomb_runner_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/rokunufoleti/hhsgcha/zunafu.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/VC4LlAP/minecraft_diamond_armor_costume_diy.pdfIn PDF document text
    • https://cdn.sqhk.co/vabolepibe/dmyjc8V/dental_hygienist_assistant_jobs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494433/normal_602c8234c0a6f.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/xonaxevetaf/sisupuwipulovakura.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/azadi_movie_audio_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/aquaculture_of_tilapia.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/jojifedakowuvikeza.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/62737530906.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/romajexojomepo.pdfIn PDF document text
    • http://wobemiko.epizy.com/50920857748.pdfIn PDF document text
    • http://nawonuzegajosi.epizy.com/16178999671.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/xopidekadevetekijos.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_off0000c207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC207 5172 bytes
SHA-256: d52b4126ab009951732ef3b6bc6f9d007297acf61983815043b496459a5dd4d1
font_01_sfnt_off0000d3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B6 10280 bytes
SHA-256: dd0987be41b9f45d1a361c2d74312eec9b45fee5bf59b456fd06e48660fb8c93