Malicious PDF — malware analysis report

Static analysis result for SHA-256 70d8aecd341d03f6…

MALICIOUS

PDF

72.8 KB Created: 2021-02-26 17:59:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 95f2f6c508519607b837557c74aefd54 SHA-1: a2d0f123d7e11269488ff1df19c0e593fa1d9f5e SHA-256: 70d8aecd341d03f6e5c9682c6983a4594858f9509ce5d5c0809c6343136467dd
136 Risk Score

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://druttle.ru/award?keyword=html+code+to+change+table+background+color PDF link annotation
    • http://winoxolupuvil.getenjoyment.net/wixebesine.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473654/normal_5fcf58dd42292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_6033f57e9b426.pdfIn PDF document text
    • http://tigesonepovar.66ghz.com/29842048802.pdfIn PDF document text
    • http://dogolojowazovuf.iblogger.org/kinipisul.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_6026de1294357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424632/normal_5ff5ec57ee2c5.pdfIn PDF document text
    • http://wotaxatumumodok.sportsontheweb.net/lidapuzajagadowedugep.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/data_structures_in_cpp_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/firijanab/Kidgin5/sakiki.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/bufexa/zagupomipulorevutas.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/kapagebofofakokatovonutub.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/lomokik.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/nsw_bdm_change_of_name_form.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/vovimituvadem.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/janik.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/59800793348.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_off0000d82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82B 5340 bytes
SHA-256: 5c9190daeb537e1884ad1ff59bbadc8ad96de5e6f379ecc3455ccd3fdfd2487c
font_01_sfnt_off0000ea24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA24 13464 bytes
SHA-256: 8dabb5f62592045984451f8baa6bbdc0c4193288b915a501129973c3a7f787d1