Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d526316227862aa…

MALICIOUS

PDF

84.4 KB Created: 2021-04-02 03:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 5d895cd8463bf99ffb0ad2f93a26cdef SHA-1: 762d46bfecc85992fdb8c0445f52212de0b03d7d SHA-256: 4d526316227862aaec60727d750d0a70117bb2c3ca9cc2e53aa42138e93b71b8
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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://xezojetit.ru/wix?keyword=8.4+polar+bonds+and+molecules+worksheet+answers PDF link annotation
    • http://zofosopu.22web.org/consider_the_lilies_satb_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/duxisabaza/jaDgiii/group_counseling_skills_and_techniques.pdfIn PDF document text
    • https://cdn.sqhk.co/zizenozi/SjgDgid/space_pew_pew_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/xenudipu/ibGJAd9/guxorebi.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/bxDdig3/tozapabawixizuvolixer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475212/normal_602d80284787c.pdfIn PDF document text
    • http://notudokebifapaf.22web.org/zogimeriseje.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/xhfNjfK/79099246219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481417/normal_6020ff137e709.pdfIn PDF document text
    • https://cdn.sqhk.co/bebetirifam/bjbhiGM/cable_selection_calculator_australia.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/gjfAjau/74090552851.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kajusob.epizy.com/samev.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/electric_guitar_drawing_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/89080874496.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/variedades_de_cafe_y_sus_caracteristicas.pdfIn PDF document text
    • http://lelupiborojez.epizy.com/nukepimikipinobimus.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/wu_tang_clan_albums_ranked_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/24978601368.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/gefavotasina.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/fewurafefowanurina.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_off00010600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10600 5828 bytes
SHA-256: 6fcd79415b8325a9c139c853adf22cc1aa4f995d01706cb181010a5ea9c6684f
font_01_sfnt_off000119c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119C6 12552 bytes
SHA-256: c57ee654c49e8985f6c09fa5f2f8a9cfc509d6fd79636624e5b8679e8faa3203

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