Malicious PDF — malware analysis report

Static analysis result for SHA-256 422786c2781a095b…

MALICIOUS

PDF

74.3 KB Created: 2021-05-22 09:15:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: cb522f7799ab3db881d4524010ed1e33 SHA-1: e932e8dca4dc67381ba55dc661416ba375f999a0 SHA-256: 422786c2781a095b0bf6c9226161affffca83e3fed4fd43ddbfa44a669f60b01
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that leads to a suspicious domain, likely intended to host a phishing page or further malware. The document body, though heavily obfuscated, appears to contain text related to funeral home obituaries, suggesting a social engineering lure.

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://xezojetit.ru/strik?utm_term=crowder+funeral+home+springfield+tn+obituaries PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391925/normal_6018e6a1873f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413240/normal_604e161ecac6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392193/normal_601d9eff4508e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417321/normal_6051c46dc7850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379742/normal_604186ed6f173.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408460/normal_5fc61e651a4e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486353/normal_5fe793ab23c4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/48997d6b-b9ca-43ae-850b-497baa859649/what_is_ecological_developmental_biology.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/pardesi_anthem_video_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/miledu/wills_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/86917978869.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/tijotubok.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/le_couperet_film.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/9960753759.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/tizojanujebalafimusupojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ea6bc52-9e34-439a-933d-b246fdaf0299/bunker_hill_security_system_manual_60565.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/vcenter_5._5._0.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/traditional_folk_music_definition.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_off0000e618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE618 5592 bytes
SHA-256: 4a51bde82abccb7f3fe675b2580493d23a86dea07ad44e0789ed3e59f06785e4
font_01_sfnt_off0000f8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8FE 10124 bytes
SHA-256: 38655bbce3998252cec8ce6536b292786d2fcd7ebd98d915b84dfb3ae66c4f6d

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