Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebd601c1ad0afdcd…

MALICIOUS

PDF

70.0 KB Created: 2021-02-23 16:22:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6dec966342a9ee020b713bd19ae772e3 SHA-1: 61fe9480340715110fe9608091a2550a626361f7 SHA-256: ebd601c1ad0afdcde0166b5be10c2780de1cf885eedd90651be2f62ac96af8b4
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/123?utm_term=what+are+the+ingredients+in+domino%2527s+gluten+free+crust PDF link annotation
    • https://lowobuganigazo.weebly.com/uploads/1/3/1/1/131163610/tasoruku.pdfIn PDF document text
    • https://gibegijatu.weebly.com/uploads/1/3/5/4/135400332/vuwopunij-duxitis-kalaxa.pdfIn PDF document text
    • https://bevabuje.weebly.com/uploads/1/3/4/8/134897483/5391058.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445114/normal_5fecf9134fcfd.pdfIn PDF document text
    • https://lisewaduw.weebly.com/uploads/1/3/4/3/134358893/duwasunezove_jalokigu_lowogegej.pdfIn PDF document text
    • https://tezadogiva.weebly.com/uploads/1/3/4/5/134522012/2203635.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4527042/normal_5ff5fb367989d.pdfIn PDF document text
    • https://xixemoxutosiseg.weebly.com/uploads/1/3/4/4/134473276/musixevijolun_kejite_borid.pdfIn PDF document text
    • https://dolilugufup.weebly.com/uploads/1/3/0/7/130776220/3ddd7362e25.pdfIn PDF document text
    • https://seligelota.weebly.com/uploads/1/3/1/4/131453084/sexazarorif_sujipuxolam_nuxifu.pdfIn PDF document text
    • https://duvozeja.weebly.com/uploads/1/3/0/7/130739152/5541537.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/veledabejufi/nanunurinemebejip.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/calendar_template_november_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/ultrasound_guided_infrapatellar_nerve_block.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/bujigod.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_off0000d365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD365 5480 bytes
SHA-256: 528760c76ffd3043690e1a4036d1fb1df7a98fadfaf5f15da7706b355517db2c
font_01_sfnt_off0000e5f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F8 10844 bytes
SHA-256: 18494ef77b935e67b7537fed4d5ecb6c71f9fc390603b96bf648036850b88f04

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