Malicious PDF — malware analysis report

Static analysis result for SHA-256 8808d2fe28c1b809…

MALICIOUS

PDF

49.9 KB Created: 2020-10-02 12:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5261deb461ef63ead3c7cb96bd667686 SHA-1: 622ddbe9c8d964d10feeb5e3a6326260275d36a9 SHA-256: 8808d2fe28c1b809a6aa1510b467fe5d8ac3719c88729571e9baec9f5866ceaa
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=wyoming+oil+and+gas+commission+news In PDF document text
    • http://susoza.saoceanpaddlers.com.au/uploads/1/3/1/4/131454899/3442861.pdfIn PDF document text
    • http://rugikowed.janemennigke.com/uploads/1/3/0/9/130969497/9736372.pdfIn PDF document text
    • http://files.monheganschool.org/uploads/1/3/1/4/131482826/6121026.pdfIn PDF document text
    • http://files.stephanwinklerkunst.com/uploads/1/3/2/6/132681474/gizejaropar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/binifowapufeser.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c92d53e-4c1a-47c0-be97-dee1495fba10/wefuninuladusodudotuloj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/691db867-9b0f-454a-b10d-d16fb8f48881/lozijibazudukomemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2432eda-c70a-43d4-a325-df1da8b92139/mamovojepodid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e3704f0-be4c-45fa-93f7-f3a0d9f59a21/teridodexodelisesad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66ef18c8-f7c7-4376-bd5f-9046427ba4e6/piwiviwonigivaferikikela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/764f0b72-34fe-4c63-b587-b3c466b967c5/76822936825.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5888159-3f48-46fe-941c-fe560d7cbe0f/towarifisezanujibipixemex.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7827 5080 bytes
SHA-256: d3d0ade64473b4d1dc998a02ff09facb0d34016e40d2d6520ce608dcd6de5d9a
font_01_sfnt_off00008966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8966 10392 bytes
SHA-256: c4b89af097326ea1d932f91509e5b044189b3adcd0f02ac140d025e77b56faf5
font_02_sfnt_off0000acd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACD3 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e