Malicious PDF — malware analysis report

Static analysis result for SHA-256 0289ed07879a7a2a…

MALICIOUS

PDF

64.8 KB Created: 2021-02-09 12:30:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 95d065119490943f7dbbb32f9d541814 SHA-1: 6c29a09c675f49d219d644fe6bffbbee897bae2e SHA-256: 0289ed07879a7a2aebf7ed5d54cf64b44ea41bbf87245f85b7786e787cd542f7
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/aws?utm_term=ode+to+joy+sheet+music+clarinet In PDF document text
    • https://cdn.sqhk.co/pumopivosoba/mTjjeA2/45086084422.pdfIn PDF document text
    • https://cdn.sqhk.co/wavafinudow/hW2idjf/29426914048.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/XieMiiW/buzatejel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474191/normal_5ffa8a10f0e48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lubozogemodusa.epizy.com/scholarship_notification_letter_template.pdfIn PDF document text
    • http://dodujorumapide.epizy.com/70297289700.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/tripadvisor_logo_vector_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/aws_lambda_console_editor.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/vafofegafajixepuxedemulun.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/free_printables_math_worksheets_for_preschoolers.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/dedareleponufopeba.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/zisomasozebuzamedekanawew.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/school_days_mod_apk_1._190_unlocked.pdfIn PDF document text
    • http://zepinurubav.epizy.com/kaun_banega_crorepati_questions_with_answers_2019.pdfIn PDF document text
    • http://xojaxalevigob.epizy.com/35768147258.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_off0000c036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC036 5384 bytes
SHA-256: 9d546cc27ee22f5e557bfb18f41246bc615d6060f2f14ff685d06aa34dac42b5
font_01_sfnt_off0000d264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD264 10376 bytes
SHA-256: e21e481fda9ed83065f0c80a30fffe161a18412e7fb6bb74093c908f3c436125