Malicious PDF — malware analysis report

Static analysis result for SHA-256 c139f3dd4306fd64…

MALICIOUS

PDF

74.4 KB Created: 2021-03-03 00:08:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 22351c8b05ff277959b6e04b42550bd0 SHA-1: e27c563743bd5e49a62b7c87d67640e00fc755ae SHA-256: c139f3dd4306fd6427b6e7e2ec561d60e188394a37dfbadd43c44fcb7d36c989
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://resalured.ru/wix?keyword=himalayan+brown+bear+adaptations PDF link annotation
    • http://load-bcp.com/texas_franchise_tax_report_due_date_extensioniumvk.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/kheijGW/arcade_basketball_game_rebound_pro.pdfIn PDF document text
    • http://gouliwer.online/12789255565zs89i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470678/normal_602b292818eb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387703/normal_603a07e0ad850.pdfIn PDF document text
    • http://wisitens.online/emotional_support_service_dog_letter_template23e7q.pdfIn PDF document text
    • http://siondez.ru/philosophy_of_computer_science_journals_with_impact_factor_2019x4rj5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499635/normal_6021658a121ed.pdfIn PDF document text
    • http://wordsidepost.top/lunatic_princess_sheet_musictl9hr.pdfIn PDF document text
    • https://cdn.sqhk.co/sogefuluf/igdhcgi/talking_tom_gold_run_mod_apk_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zapusukajev/nnUjboU/70200523265.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/jeromopelurab/metallic_bonding_properties_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/42870241727.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/palogeg.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/ejercicios_de_ecuaciones_de_primer_grado_con_una_incognita_sencillas.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/80067924068.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/historia_del_acoso_escolar.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/80222865967.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_off0000e7f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7F1 5400 bytes
SHA-256: 09d7560880442eac214d633e54729a858657607550a0b680b01c4144fdfa78ac
font_01_sfnt_off0000fa40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA40 10032 bytes
SHA-256: c69a869235adb082b8a121cf31e2f5a5642f44bf73994ce0b8c4e632242eb8a1