Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bcdc67e59808fcf…

MALICIOUS

PDF

67.2 KB Created: 2021-02-18 21:10:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3f4a4deb3fa5b99d1b82187a2f0bb04d SHA-1: a3a327c16f94ac625ae26494eb8b80945dc5ca06 SHA-256: 2bcdc67e59808fcfe8ec4df638f1829875c1388b2111763276e0809a982d9d5d
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://leonvi.ru/wix?keyword=measuring+volume+graduated+cylinder+worksheet PDF link annotation
    • http://nikubet.iblogger.org/86277202414.pdfIn PDF document text
    • http://topsale.pro/el_absolutismo_en_europa_pptraihs.pdfIn PDF document text
    • http://wutigesekigaj.22web.org/crommelin_pond_sealer_data_sheet.pdfIn PDF document text
    • https://davugunibelerab.weebly.com/uploads/1/3/4/6/134612729/c9326a82a3.pdfIn PDF document text
    • https://kukefilatisila.weebly.com/uploads/1/3/4/4/134498126/6645747.pdfIn PDF document text
    • https://bepifesak.weebly.com/uploads/1/3/4/0/134096259/solusikixibedigegu.pdfIn PDF document text
    • https://lajutiruwogow.weebly.com/uploads/1/3/4/5/134585316/zevana.pdfIn PDF document text
    • http://hookup750.website/lurelijakatsubvu.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/mufukep/15024160872.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/struktur_dan_fungsi_organel_sel.pdfIn PDF document text
    • http://kubilev.epizy.com/lipamugafoputeletesezofo.pdfIn PDF document text
    • http://kofezinidabefu.epizy.com/44679091883.pdfIn PDF document text
    • https://s3.amazonaws.com/gopifu/bubble_answer_sheet_1-_100.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/83505197220.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_off0000ca40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA40 5676 bytes
SHA-256: 9345b090ecc80c633d669d95e2a1820cea5dbb8cc39c748773cced66c6e7b8a5
font_01_sfnt_off0000dd89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD89 10220 bytes
SHA-256: d7156747b9d0d6b76423eed50c60369e2d11bb4639c10c4129ab75b30d4df3a3