Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f7e8d9510ea093c…

MALICIOUS

PDF

39.5 KB Created: 2020-10-12 03:34:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ea8517f0c5a72d1914510f1872d49955 SHA-1: f8e7fe99be4ac46c8ef748c6f26589160e3a244a SHA-256: 4f7e8d9510ea093cdb5ff8c01699e433b44cc01c24b32677e9f69d790ce2884e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/pify?keyword=what+does+elar+stand+for+in+education In PDF document text
    • http://files.coloniachapel.com/uploads/1/3/1/4/131437711/bugavajega_vegojurimejiso.pdfIn PDF document text
    • http://gejopade.plexgallery.com/uploads/1/3/1/4/131453060/vibanimuxikegikomu.pdfIn PDF document text
    • http://files.texasgermanshepherds.net/uploads/1/3/0/7/130740512/komelenomes-finuvudazapib-sabefepomin-vamajupadiva.pdfIn PDF document text
    • http://files.nccueagletravel.com/uploads/1/3/1/6/131637484/kunofudetafedarepaba.pdfIn PDF document text
    • http://buwijuda.genewittpto.com/uploads/1/3/2/6/132695663/bebozekezulu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f307fd68-e185-4288-91da-2060a615d324/megesunugokunijifazozar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/685d7044-8087-4f19-acb4-655a3d7bfda7/7123060245.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6787bb31-8b20-4608-afca-d3f0dc41008b/3711074713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/pazakizusug.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_off00005cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC7 5124 bytes
SHA-256: 8350bf579739e59a17ae2df57f89788c073d4a960f75803541df9e34d46f8022
font_01_sfnt_off00006e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E39 10456 bytes
SHA-256: 9c1828547b74550e40d3b9f0e75c25e29da07b5c21cc7456832c59c3eaaef630