Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac7806ca03fe9e8…

MALICIOUS

PDF

72.0 KB Created: 2021-02-23 02:27:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 160f051c1bc2a915b83f93603285fcb5 SHA-1: ce0eda66f2336f914d07d2ac28b4b621ea8fa5d7 SHA-256: 2ac7806ca03fe9e841902ab60ba0870429f7618580c4e97cc8b8a930b54eb352
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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://crophysi.ru/wb?keyword=vizio%20sound%20bar%20not%20working%20with%20hisense%20tv In PDF document text
    • http://erethiztzj.space/business_english_books_freetl1an.pdfIn PDF document text
    • http://zaxunux.iblogger.org/ncte_full_form_in_college.pdfIn PDF document text
    • http://winoraama.fun/wordpress_forms_to_google_sheets2rqf5.pdfIn PDF document text
    • http://mastericy-chistoty.ru/what_is_the_definition_of_capitalize9polj.pdfIn PDF document text
    • http://prizinsta.info/9404609704710jvp.pdfIn PDF document text
    • http://xidotamasaw.22web.org/jonurozoligekigolomugi.pdfIn PDF document text
    • http://top-agent.ru/nivazirisojuwawegojususucnnjv.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/memobofilenabon/68561022448.pdfIn PDF document text
    • https://s3.amazonaws.com/gopifu/words_commonly_confused_worksheet_part_2_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/aleluia_cohen.pdfIn PDF document text
    • http://robefopatobut.epizy.com/dimededifogepabugajaj.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/sejukejijelutudupoduj.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/aha_guidelines_2017_hypertension.pdfIn PDF document text
    • http://toxijojow.epizy.com/89817999235.pdfIn PDF document text
    • https://s3.amazonaws.com/gewisetug/23534603625.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/english_book_class_6_ncert.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/xudotirewanuwas.pdfIn PDF document text
    • http://rubuvajaroxe.epizy.com/zixivodavebo.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_off0000dcea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCEA 5424 bytes
SHA-256: 3e2ae6c48887c533f507ffb46327db4d803b4b82d72d17c92931bf41f3576584
font_01_sfnt_off0000ef7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF7B 10296 bytes
SHA-256: 211dd085abcbd95322396b105e0d5298e406afbad6672b676d4839929175e768