Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a4e904c8968d56a…

MALICIOUS

PDF

64.8 KB Created: 2021-02-20 23:40:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8507622f96e920fda35eb208290c5f65 SHA-1: 30d2de2282488bc5fcd6d9a29cfc64f8efb62cc2 SHA-256: 0a4e904c8968d56a371088a47fb7d878e7535925684ff4c8a30ac678027682de
136 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
  • 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://jottigo.ru/aws?utm_term=boston+market+menu PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455387/normal_602f31d7d525e.pdfIn PDF document text
    • http://xufisuraber.22web.org/how_to_make_a_steel_bunk_bed.pdfIn PDF document text
    • http://memubalejegezur.66ghz.com/vofazazisofoxezanu.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/A6fn3he/sandwich_shop_vienna_va_hiring.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gitogopafo.epizy.com/11267250069.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/64975443211.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/checklist_performance_appraisal_method.pdfIn PDF document text
    • http://momosetid.rf.gd/turbocad_mac_user_manual.pdfIn PDF document text
    • http://mafujerodise.epizy.com/free_business_letter_heading_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/9915252645.pdfIn PDF document text
    • http://pulilubanis.rf.gd/tattoo_flash_sheets_history.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/rabolovugo.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/29615603769.pdfIn PDF document text
    • http://fitariruzazu.epizy.com/depolivufasifunoru.pdfIn PDF document text
    • http://takugiwem.rf.gd/flat_responsive_admin_template_free.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_off0000c257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC257 4912 bytes
SHA-256: 6a034052617f8210455d97a4fd01f39618cba129783d253d815782d1d1c22a61
font_01_sfnt_off0000d2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F1 10576 bytes
SHA-256: 85ab28300e1873b42c0092a03cc1ec55bb36a0d2de29f6c61c4a69fbe713fb4a