Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4fea525da12e532…

MALICIOUS

PDF

525.8 KB Created: 2021-12-20 07:36:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 85527b84cb8a2165c9db0e26be765040 SHA-1: ec9daa44a0d0ff09cf74d09b0041f423eba41b95 SHA-256: a4fea525da12e532e6c023b75769ce7685ac81d9c741ad7251a2e9ec3dd83ae9
114 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4876

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://coretry.ru/uplcv?utm_term=when+was+the+first+publication+of+the+bible PDF link annotation
    • http://shahnawazonline.com/uploads/files/56946245945.pdfIn PDF document text
    • http://diegogenna.it/userfiles/files/15730814016.pdfIn PDF document text
    • https://aiwcecckolkata.org/FCKeditor/file/wajikidam.pdfIn PDF document text
    • http://hdurmuslar.com/images_upload/files/jalisa.pdfIn PDF document text
    • https://www.wroclawmodelshow.pl/ckfinder/userfiles/files/12100218491.pdfIn PDF document text
    • http://antracit.topmebli.com/content/xuploadimages/file/susukalem.pdfIn PDF document text
    • https://soechi.id/userfiles/file/47352690678.pdfIn PDF document text
    • https://basisnomor.com/contents/files/mojeporulexu.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16198a3f19648d---finunofevelolelakim.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/93a1cba44074196f4c0f8481d80b267e/23572266669.pdfIn PDF document text
    • http://autord.ca/site-uploads/70345428181.pdfIn PDF document text
    • http://fsoa.cn/userfiles/file/81690687877.pdfIn PDF document text
    • http://msslink.ru/userfiles/files/5317177577.pdfIn PDF document text
    • https://netwindowvn.com/uploads/userfiles/file/semipu.pdfIn PDF document text
    • http://iburgisidimarsala.eu/userfiles/files/fukovidanewuwubonixe.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/gefibefezudujoto.pdfIn PDF document text
    • https://stauber.lt/images/files/7448578406.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/47951404676.pdfIn PDF document text
    • http://canxetaidientu.com/images/file/lavofeteweworisepi.pdfIn PDF document text
    • https://livbiopharma.ipsrvps.com/userfiles/file/nawufazixanasalid.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/58024370902.pdfIn PDF document text
    • https://pasarangroup1.com/contents/files/kaguzusor.pdfIn PDF document text
    • https://dangeloremodeling.com/nbloom/fckuploads/file/laruguwijijewa.pdfIn PDF document text
    • https://madame-tina.com/ckfinder/userfiles/files/26994520724.pdfIn PDF document text
    • http://k-ookuma.com/js/upload/files/93618685838.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0007bf8d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007bf8d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007bf8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF8D 10896 bytes
SHA-256: d263a92fc744436b4e268524e1a8ce86a818d5557ee3ed68acfbb97390803f60
font_01_sfnt_off0007d886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D886 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0007ef25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EF25 21060 bytes
SHA-256: 4f50d14234ff9c42448f77634d51794690bc7c64004994693f030776940162c3