Malicious PDF — malware analysis report

Static analysis result for SHA-256 4057bf2420d1c4b8…

MALICIOUS

PDF

72.9 KB Created: 2021-02-08 21:53:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 88394a93240e7602e6e1de4b97bb8687 SHA-1: dc9a42ea319c702b745506b025e0e408ba71c4b1 SHA-256: 4057bf2420d1c4b82fa9e730e8bad1b1d802d98712568c8b75b79dc27993bcd4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. ClamAV detection and ML classification strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'DIY scrabble tiles', aligning with a phishing pretext.

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/wb?keyword=diy%20scrabble%20tiles%20template PDF link annotation
    • http://nizalanus.22web.org/qualified_audit_report_adverse_opinion.pdfIn PDF document text
    • http://vitalia-transports.com/werewolf_movies_and_tv_shows_2020unqz6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425759/normal_5fd67b324244f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402953/normal_5ff9c42482e34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453914/normal_5fccb33b3bbec.pdfIn PDF document text
    • http://tk-time.site/quran_in_english_transliteration_and_translationf1a9m.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370778/normal_5ff80199c65d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479688/normal_600b4da82b183.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mekufajotifix.rf.gd/medicinal_plants_information_neem.pdfIn PDF document text
    • http://vakusidoler.epizy.com/notune.pdfIn PDF document text
    • http://betibar.rf.gd/dabofejegosekegon.pdfIn PDF document text
    • http://tawaxinazaka.rf.gd/samsung_mobile_whistle_notification_tone.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/91491711849.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/50637975433.pdfIn PDF document text
    • http://pagosunizuboroz.epizy.com/sunibanasajigo.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/nesavixorapune.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/35235006313.pdfIn PDF document text
    • http://zubeleboju.epizy.com/37099647136.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_off0000dfbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBE 5320 bytes
SHA-256: 6048342b68bcc17345774f1bb15d42671d7a9034007707176ec10a573c3c6ea1
font_01_sfnt_off0000f1cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CD 10844 bytes
SHA-256: 9d57c39d3b580138df506e7cc7322c90efd582b10ae04deb0990f33d71763ea1

Open this report in the interactive analyzer, or submit your own file for analysis.