Malicious PDF — malware analysis report

Static analysis result for SHA-256 086a8f4cc2a1af32…

MALICIOUS

PDF

71.8 KB Created: 2021-02-19 03:17:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cddf8a28a1a9c608465e0a963dd7c740 SHA-1: 305952de0c4ecdfb83131dda5117e44276b934e7 SHA-256: 086a8f4cc2a1af32238dc858fed8db7b02ae7471b0fa15fb56f265a0c5958a46
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/wb?keyword=human%20computer%20interaction%20jobs%20uk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366305/normal_5fe0d80919526.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406820/normal_5ff61741329bd.pdfIn PDF document text
    • http://tryporte.xyz/bonunotew4wzz4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_6016166077778.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416664/normal_5fd17cd7f3b81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_5fd7b5a7218ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452837/normal_5fef9355af2c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485813/normal_5ff7da3118991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403421/normal_600bec95a2c13.pdfIn PDF document text
    • http://pinerapidsrr.com/dance_new_team_names_for_fantasy_footballjech5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dudasuz.epizy.com/jalara.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/android_video_player_fr_chromecast.pdfIn PDF document text
    • http://zunebafovako.epizy.com/formacion_profesorado_aula_virtual_junta_de_andalucia.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/film_treatment_template.pdfIn PDF document text
    • http://rojepubaxogo.epizy.com/betting_raja_ki_film_video.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_off0000da77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA77 5288 bytes
SHA-256: 8c9bf1f4ffe0a45bd4d6802812141435e9f0c32e7a8d4bd2601ad18c3e31a1f2
font_01_sfnt_off0000ec55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC55 10808 bytes
SHA-256: 2a38a7f5dfcf99482861352b7ba86d3e317aa99a44bf1ce597c00237bf7a86cd