Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9a668314259cae3…

MALICIOUS

PDF

82.7 KB Created: 2020-12-26 13:28:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5f6e3a7502aa751151935262fc1e8ed8 SHA-1: cbe0c250b6f8c57bb0cd264b9cb2b2f2964dbf2b SHA-256: e9a668314259cae341a92a9c95a9ede87938ac8afc340bfe716027a59f6eac8a
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/strik?utm_term=elune+tier+list+november+2019 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4465938/normal_5fde2d56551dc.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxefoxo/jcyzgcU/gravity_bounce_shoes.pdfIn PDF document text
    • https://cdn.sqhk.co/sepufaziru/jchhXjc/fadoxukutotitepur.pdfIn PDF document text
    • https://cdn.sqhk.co/dojatejij/H29jbig/radiology_ltd_wilmot.pdfIn PDF document text
    • https://cdn.sqhk.co/bolomekurufe/gjgejcJ/tornadoes_facts_wikipedia.pdfIn PDF document text
    • https://reborugavuzak.weebly.com/uploads/1/3/4/7/134736286/73bbe.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/vidadaviwal/formule_dioxyde_de_carbone_chimie.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/demonstrative_pronoun_definition_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/caribbean_social_studies_for_csec_textbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba6827e0-1b56-4a27-a538-0fbe121649ce/french_alphabet_with_pronunciation.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/losuse.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/halo_beyonce_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/timafatafej/gp66_cleaner_amazon.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9D 2940 bytes
SHA-256: 72b815926571ed76dcdb15ba0f925f8be737f518649be50e3ea36e0fc125b231
font_01_sfnt_off00010929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10929 5260 bytes
SHA-256: aaab5a01f82cffa72e2b96d4868930238f12441c2fadade0a9766c1ccecc5d41
font_02_sfnt_off00011b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B02 10032 bytes
SHA-256: ec5e665adb436d2b9f6e9e3601960d4885850b623ea918a72f7f46861e141714

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