Malicious PDF — malware analysis report

Static analysis result for SHA-256 fff099ee0bd0f720…

MALICIOUS

PDF

656.6 KB Created: 2023-05-28 16:50:24 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 5.15.4) First seen: 2026-06-10
MD5: 0266d737ca22eb7bf17a4ff9886be057 SHA-1: 233404c2a9a21ca1ac9a84167fc53c45473068b7 SHA-256: fff099ee0bd0f720bce6f0349fcbbca61873133b30d3a158a8fad2d07bc9847e
146 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0544

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://wexoto.oapsirs.com/gdy?utm_term=linux+commands+cheat+sheet+pdf PDF link annotation
    • http://www.bitstream.comIn PDF document text
    • https://img1.wsimg.com/blobby/go/671d8571-de15-47bb-8cd8-b624751dbe0e/downloads/traumatic_experience_and_the_brain_a_handbook.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/7c4463e3-109c-48af-b9be-98e22cdf2116/downloads/download_kidz_bop.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/7c4463e3-109c-48af-b9be-98e22cdf2116/downloads/marcelino_pan_y_vino_english.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/7c4463e3-109c-48af-b9be-98e22cdf2116/downloads/34577227236.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/7c4463e3-109c-48af-b9be-98e22cdf2116/downloads/north_by_northwestern_housing_guide_2018.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/d37a9b24-bc42-4cb1-ab3b-3d1b21b01aec/downloads/92896301819.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/7c4463e3-109c-48af-b9be-98e22cdf2116/downloads/93823397961.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0009e84f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E84F 11980 bytes
SHA-256: 2180d5f89853e1d13932d68902e4546ffce54ae6a6df57a060c6858e6daee85e
font_01_sfnt_off000a0712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0712 17004 bytes
SHA-256: dad8ea04af8816f0ce2fbf2d0f2d36a1b1042cebe30a1f041cc5a2b00b76eaf9

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