Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c06121f9607bd1c…

MALICIOUS

PDF

70.0 KB Created: 2021-03-02 13:02:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3e495cf61871a2633a0fce5aadf149ae SHA-1: de0430f70b2a1735f248d8be42b8810325b5c918 SHA-256: 1c06121f9607bd1c4e02aa16b708274b5383cb080407081a7d7cc37e5f261a9c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ponafet.ru/wix?keyword=chemistry+lab+manual+high+school PDF link annotation
    • http://dazipuv.iblogger.org/logakunubawedaxaxexaj.pdfIn PDF document text
    • http://timinome.getenjoyment.net/64275302255.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/is_the_renaissance_festival_open_on_weekdays.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/367a7.pdfIn PDF document text
    • http://tewazezila.66ghz.com/bhagwan_ki_photo_pagalworld.pdfIn PDF document text
    • https://zasevolonuto.weebly.com/uploads/1/3/5/3/135335071/2809555.pdfIn PDF document text
    • https://fakokawiloduku.weebly.com/uploads/1/3/0/7/130775735/podivoze.pdfIn PDF document text
    • http://xoguvux.22web.org/answer_to_the_impossible_quiz_number_37.pdfIn PDF document text
    • https://guxisawupejova.weebly.com/uploads/1/3/0/8/130814058/ranaxixezis-jugalibajid-ridetudosar.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/sowewazulejewi/pathogenesis_of_acne_vulgaris.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/43932723779.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/tapumufisosip.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/english_grammar_worksheets_for_grade_4_tenses.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/pelosukilavipu.pdfIn PDF document text
    • http://wekitil.epizy.com/whirlpool_stove_instruction_manual.pdfIn PDF document text
    • http://doruxexim.epizy.com/11217200942.pdfIn PDF document text
    • http://dalotidel.epizy.com/principle_of_mathematical_induction_proof.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_off0000d61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61B 5360 bytes
SHA-256: 95502bc520561e563cb131ff2164cbb90d17789938ce9c3ad4df8555e8160682
font_01_sfnt_off0000e82d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82D 10188 bytes
SHA-256: fd2cd8709e94db09302adf0c8002026b93e12d8c9d7d673f31c6238e73366eba

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