Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7efed1881f326a4…

MALICIOUS

PDF

75.8 KB Created: 2021-06-12 10:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bbc454273d90c7cde6ea64b3ca8cb371 SHA-1: ca9970c6ed37f3a556b3f10f1dbf6252c6a90330 SHA-256: c7efed1881f326a40941f9cee1ce8aedbf704a804b8bcb68470fce204adabcbf
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick users into visiting a malicious site.

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://nomylo.ru/pbw?utm_term=how+to+get+black+panther+in+lego+marvel+superheroes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451945/normal_5fc818d240e63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458417/normal_600c61e65a854.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e1d8142b-942f-462b-9cc5-e915916e6b42/how_to_learn_piano_adults.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/217db65e-0346-4eda-b5f4-c5bc7cddc85b/togajanasime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ec0f4b1-2a8b-48f1-9b65-77827fe774a7/hockey_goalie_stick_sizing_chart.pdfIn PDF document text
    • http://difusowafid.pbworks.com/f/binomial_exercises_with_answers.pdfIn PDF document text
    • http://xujefix.pbworks.com/f/13187939569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4dded9b-d657-41fe-963b-fb5a80465980/how_to_update_my_tomtom_for_free_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7588a33f-1ee8-4d0e-b5d7-f18665a87cb9/acordes_de_guitarra_para_esta_tarde_vi_llover.pdfIn PDF document text
    • http://zukitisa.pbworks.com/f/new_year_shayari_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c9c9d3b-1150-41ef-a9a8-cd68c4e7ab65/how_to_use_warm_mist_humidifier_vicks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad57cb1-a0ba-4742-aa5b-8440a9a1b5b2/carson_dellosa_answer_key_6th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46ed7032-4d68-4c7a-af7e-f218827a810d/vocabulary_workshop_level_b_unit_3_answers_synonyms_and_antonyms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/477ead8f-9206-4d1d-9861-5576fff3c857/digelegetogifexuzifuzili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6ea9ef1-13a4-4f2c-9eef-d9e862a18879/cuales_son_los_verbos_irregulares_en_ingles_ejemplos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2756d5f-1f0c-44f6-b479-57c513269c88/livros_espiritas_romance_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bf4dea6-abf8-4da1-84d5-ff5693890f52/percy_jackson_book_after_the_lost_hero.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ee64a5-56a5-48a4-9560-285e036cdaf5/5893230070.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4401f5dc-2fe5-4bae-9491-f7858852a8c4/fallout_76_character_build_tips.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_off0000dada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADA 5548 bytes
SHA-256: 7d42fe68e57243ccc8a78a2787c55943454f826c19293caf2c9c53cc1aaf4973
font_01_sfnt_off0000ed9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9C 10932 bytes
SHA-256: f789c2a7853c6f2a3c460afe4f617d5e7904fed25e80a1ba88c71bd8455cef61
font_02_sfnt_off00011302.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11302 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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