Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b7a92417f0ac546…

MALICIOUS

PDF

71.9 KB Created: 2021-03-16 00:01:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0b8c2ab8ccf5ed1fc6fac9b122afb105 SHA-1: 186b2bc4c416c6f896fed82785aaf8db31a4b70b SHA-256: 4b7a92417f0ac546cd6911b1dc42d202526be411e5370c11c824c1716c0da471
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://dugedepap.ru/award?keyword=cell+organelles+and+their+functions+pdf PDF link annotation
    • http://lemoxovuv.22web.org/adobe_cc_suite_mac.pdfIn PDF document text
    • http://urott-hu.com/horton_hears_a_who_book_cover_imagevrxit.pdfIn PDF document text
    • http://ziwusis.getenjoyment.net/74011907958.pdfIn PDF document text
    • http://joxixer.22web.org/literary_theory_critical_lenses.pdfIn PDF document text
    • http://eyebrowthreadingdallastx.com/behavioral_approach_to_information_retrieval_system_designrwlvo.pdfIn PDF document text
    • http://labagokawiboze.22web.org/21616179239.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/fotepopunaj/minions_480p_dual_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/affine_space.pdfIn PDF document text
    • http://waxivapisisan.epizy.com/87211362461.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f2aafc0-a98a-4bf6-b383-f01cf4adc866/guwowarezofadabuvaposuvu.pdfIn PDF document text
    • http://fonobufusig.rf.gd/79308882749.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/61230524441.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/kexugagokiwovabu.pdfIn PDF document text
    • http://nokejufesuw.atwebpages.com/junkers_cerastar_bedienungsanleitung.pdfIn PDF document text
    • http://nibemodida.myartsonline.com/how_much_does_it_cost_to_convert_manual_garage_door_to_automatic.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/63851927353.pdfIn PDF document text
    • http://lajirobodogew.epizy.com/kukuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/954576d0-38ad-487e-832c-c51a5213ab30/cooler_master_n200p.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_off0000dbee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEE 5320 bytes
SHA-256: 25848d94f6ba4f8bf2268acb626070f319e077b82db14afe8f05c06a76363c52
font_01_sfnt_off0000ee01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE01 10684 bytes
SHA-256: 89f911a6b93684b1e67e10d683eb1fbe1b389151849aaef3b7806434f84d8945