Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff1555e558f5abe5…

MALICIOUS

PDF

69.1 KB Created: 2021-02-06 16:17:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7f2954570d703c4d1e3eb08de463cf85 SHA-1: 79fc12485d383ce94267d232f3b755e3a8f3f761 SHA-256: ff1555e558f5abe532d84a232ecd36693847666359edbd2259fd53074a9bde90
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://bologen.ru/wb?keyword=havaianas%20flip%20flops%20mens%20size%20guide PDF link annotation
    • http://pubavamamuzagur.iblogger.org/yajur_veda_with_meaning_in_english.pdfIn PDF document text
    • http://getubij.66ghz.com/25017550564.pdfIn PDF document text
    • http://gifazat.iblogger.org/96226063414.pdfIn PDF document text
    • https://cdn.sqhk.co/fevivesuxofo/3jbIDgd/62741405659.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/siapLgg/tafixezu.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/4B6jgMi/see_what_animal_you_are_app_that_tells.pdfIn PDF document text
    • http://sikutamilom.iblogger.org/arduino_due_library_for_proteus.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/fulazelof/vubuwubesu.pdfIn PDF document text
    • http://puzazodigeza.epizy.com/app_free_ios_11.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/cadeaubon_template_photoshop.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/bigusetiva.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/bhairavar_slogam_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/analisis_de_datos_estadisticos_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/coliformes_totais_em_alimentos.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/cpm_precalculus_textbook_answers.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_off0000d1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1AC 5336 bytes
SHA-256: bcc496b02d9eccce095d32f13d225f3977b74b08d586aec76688d08277de17e1
font_01_sfnt_off0000e3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D8 10404 bytes
SHA-256: a8edb35b6fa8ab091c3da01311af7b063c9000c82492be7f28b7af33d4d93d2d