Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eba0661a417e7f0…

MALICIOUS

PDF

78.4 KB Created: 2021-03-25 08:19:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0017499d7946b49aa1023227631e29f8 SHA-1: db0836eb39a4d35dd64c82e112e33db624a75ca9 SHA-256: 5eba0661a417e7f0bc6aa9070c527870a9a7b10ba58e77a1fbc9502be1e64a68
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains an embedded URI and an image lure that redirects to a phishing site, likely attempting to trick users into downloading further malware or submitting credentials. No scripts were extracted, but the PDF structure and URL redirection indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=pathfinder+absalom+stats PDF link annotation
    • http://zurujavurobe.scienceontheweb.net/abnormalities_in_pregnancy.pdfIn PDF document text
    • http://kufejat.sportsontheweb.net/20799856558.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/veluvanaxodevusejakavi.pdfIn PDF document text
    • http://mibafabujid.22web.org/the_adventures_of_tintin_books_free_download.pdfIn PDF document text
    • https://nuguzawopaji.weebly.com/uploads/1/3/4/0/134040365/wuwaboxem.pdfIn PDF document text
    • http://xuzetekuka.22web.org/how_to_calculate_the_magnetic_force.pdfIn PDF document text
    • https://zevoxonigex.weebly.com/uploads/1/3/5/3/135300088/7264979.pdfIn PDF document text
    • http://tudilaxug.22web.org/79401640070.pdfIn PDF document text
    • https://foxetevuleludo.weebly.com/uploads/1/3/4/8/134859937/zovivubenev.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/pibabopuduj/delaware_surf_fishing_report_2018.pdfIn PDF document text
    • http://bumazuk.rf.gd/magic_call_application.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/42748958310.pdfIn PDF document text
    • http://fanalejowegop.atwebpages.com/74965547149.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/nesifidus.pdfIn PDF document text
    • http://zujisofivo.onlinewebshop.net/25504604508.pdfIn PDF document text
    • http://mesesoriran.epizy.com/kagusijawufozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/674c1494-58f8-463f-b969-8a9ef89216f6/conceptos_y_definiciones_de_la_investigacion_de_operaciones.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/62198137357.pdfIn PDF document text
    • http://rezugarufubibif.rf.gd/electronics_and_communication_engineering_books_for_1st_year.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/nobepiven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c525ee41-bb60-437c-b0aa-5fb17c2d479d/how_to_light_a_boiler_furnace.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_off0000f56d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56D 5288 bytes
SHA-256: 51ec02dd6da26253beeafd7c0dd505904ddcf4561abc521dcd20a516042a6eec
font_01_sfnt_off00010738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10738 11148 bytes
SHA-256: acb717eb269ccbdb1229102b3e949714ddec25a8626fc60a4abac0c23d0060fb

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