Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cdd25d4fa1bd9b3…

MALICIOUS

PDF

76.0 KB Created: 2021-03-01 07:33:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: a0022fcee8d7efe5c58735dee310790f SHA-1: 6c8b7a114fe23ee30dca137ca9a32f1c5cc42cad SHA-256: 0cdd25d4fa1bd9b301f7d1639c64dc6da5e732aa54c3d5876b5ee185f6682d49
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that, when visited, likely leads to a malicious payload. The document body, though heavily obfuscated, appears to be a lure related to a 'bell motivator bike trainer manual'. No scripts were extracted, but the presence of malicious URLs and the high ML score indicate a phishing attempt.

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://leonvi.ru/wix?keyword=bell+motivator+bike+trainer+manual PDF link annotation
    • http://bostpolamos.site/19879538795raqj.pdfIn PDF document text
    • http://nikaold.site/40989686288xqj3i.pdfIn PDF document text
    • http://ceter.xyz/how_to_change_load_order_skyrim_xbox_oneaw13m.pdfIn PDF document text
    • http://doxalasi.mywebcommunity.org/46738367378.pdfIn PDF document text
    • http://taxokijoba.sportsontheweb.net/3_day_potty_training.pdfIn PDF document text
    • http://songkfrk.site/fipitulokirotuux3.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/towakog/latex_cv_template_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/botesasakadonexemetok.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/60596154405.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/job_hiring_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/why_is_50_shades_of_black_rated_r.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/wonezagimubiv.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/gewobafa.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/free_android_spy_app_remote_installation.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/zutofitur.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/aztech_homeplug_av_mini_200mbps_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/xisajosabenuwuj.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_off0000ed85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED85 4964 bytes
SHA-256: b0a856366ea0269539d163d09dfa72cf1c3c03ebff1089f8e6fc0b97a14c30a4
font_01_sfnt_off0000fe5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5B 10628 bytes
SHA-256: f1be405466fc2b3b72326c39950252e57f9e5a92aa01b1c9c9a78d12bbcabd6d

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