Malicious PDF — malware analysis report

Static analysis result for SHA-256 82cd23d2e0f60ddf…

MALICIOUS

PDF

69.0 KB Created: 2021-03-02 06:44:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a1ecd9f8a5c2c76c36c8190ac84029f4 SHA-1: c85ab555b6ae4b2fec74840ed70a38430064c28e SHA-256: 82cd23d2e0f60ddf01bd544b4b953fa6fda3bf273aeea773e850fb093ce50270
136 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a phishing document using an image lure to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly support this assessment. The embedded URL `https://xezojetit.ru/wix?keyword=mana+luna+festival+san+antonio` is the primary indicator of this phishing attempt, likely serving as a gateway to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=mana+luna+festival+san+antonio PDF link annotation
    • http://juzezudusota.mypressonline.com/percy_jackson_movie_3_watch_online.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/timozavowudelagedarewoz.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/what_is_2_normal_form.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/juegos_del_hambre_pelicula_completa_espaol_latino_gratis.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/VWgakJ8/school_management_system_github_php.pdfIn PDF document text
    • http://najisemure.medianewsonline.com/twilight_new_moon_book_plot_summary.pdfIn PDF document text
    • http://goldstein.capital/what_is_the_best_fpv_drone7wnu9.pdfIn PDF document text
    • https://cdn.sqhk.co/vopufepivipe/juggrl5/70937835902.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/wizomoravazub/sexuvosugolalivugituledom.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/tatadorekasodefofafunizi.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/54247524298.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/hollywood_movies_in_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/ignou_date_sheet_2019_jammu.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/wiwufodovow.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/joomla_template_tutorial_step_by_step.pdfIn PDF document text
    • http://pekomuvave.myartsonline.com/why_is_interpersonal_communication_important_in_nursing.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/sight_words_worksheets_for_ukg.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_off0000d44c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44C 4728 bytes
SHA-256: 98ed4615a3ecfa8274a739a578ac34961a45562915fb0ea76fa44be1a6014611
font_01_sfnt_off0000e48e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48E 10148 bytes
SHA-256: ca94f47ad59f5781a3ca1d582d5a45258ae4b125f106ef384c00cbbbe4a94f74

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