Malicious PDF — malware analysis report

Static analysis result for SHA-256 49aeee8bf626a5a4…

MALICIOUS

PDF

76.0 KB Created: 2021-02-20 04:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b205a6d2db93e5fe610609a4eb25d4c0 SHA-1: 081d09ff748add89e91b0dfec19dd9b94fc80161 SHA-256: 49aeee8bf626a5a41ebf18f520ec9650b2ae1cc96173479c7c1163a5a3ca8a88
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=central%20and%20peripheral%20nervous%20system%20lesions PDF link annotation
    • https://nagagixibedixu.weebly.com/uploads/1/3/1/6/131606435/bogaxubuda.pdfIn PDF document text
    • https://xavexipaw.weebly.com/uploads/1/3/1/6/131636683/dejejaxowadiledobi.pdfIn PDF document text
    • https://gimiduti.weebly.com/uploads/1/3/4/7/134711596/wixukugonuna.pdfIn PDF document text
    • https://lawuzifelive.weebly.com/uploads/1/3/4/0/134041442/bekixupo-gusotu-bomewid.pdfIn PDF document text
    • http://fenellalucynelle.info/awards_ceremony_program_templateqvw10.pdfIn PDF document text
    • https://semufukat.weebly.com/uploads/1/3/1/8/131857602/6882051.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/fejatepudopito/33360631679.pdfIn PDF document text
    • http://jorelodifi.rf.gd/45863195207.pdfIn PDF document text
    • http://bibikefogive.epizy.com/template_powerpoint_keren_2017_gratis.pdfIn PDF document text
    • http://kejidexod.epizy.com/bebozi.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/shadowrun_antumbra_guide.pdfIn PDF document text
    • http://pumonufagatoteb.epizy.com/gatanemadedog.pdfIn PDF document text
    • http://pumonufagatoteb.epizy.com/r_good_morning_photo.pdfIn PDF document text
    • https://s3.amazonaws.com/zedudo/mobile_app_design_templates_html5.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/simple_present_perfect_tense_exercises.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_off0000edc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC1 5264 bytes
SHA-256: 4bc04deb13e73eb69170c4f119bfcf88057efd1693adf636c462dfe67552cb8f
font_01_sfnt_off0000ff86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF86 10492 bytes
SHA-256: b8efa99c2bfdd78d0bced73f0ad19153317946613841c817165aa699bfc03020