Malicious PDF — malware analysis report

Static analysis result for SHA-256 de04e68b2fdcce14…

MALICIOUS

PDF

36.3 KB Created: 2020-10-03 05:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0d25c4a1d79a720e52ed6c67179ada9b SHA-1: 679c1bd297ec7abab409a7ea9f35f17ffe8ee443 SHA-256: de04e68b2fdcce143c018a951f7597fa80578faa9c1ee0a6b943a5dc4cf0c008
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://ggtraff.ru/strik?keyword=evga+uv+plus+uv39 In PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/mazupiwidajubejijut.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/28185943233.pdfIn PDF document text
    • https://site-1036796.mozfiles.com/files/1036796/tavabajuv.pdfIn PDF document text
    • http://files.kirkwooducc.com/uploads/1/3/1/4/131438069/safafuxilisinef-pavifimuzetuwo-sosonun.pdfIn PDF document text
    • http://xurepalem.sparklecleaning.net/uploads/1/3/1/6/131606008/7db2fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5899/4586/files/grout_gun_menards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/0876/0474/files/fourier_transform_of_alternating_impulse_train.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/5979/2022/files/acceleration_worksheet_14.2_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2493/0200/files/veguru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/331f8744-cb90-4197-8d5c-b4351e670f3e/deturubalig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c740efe-14de-4e64-aa33-265e83cad73d/naxitamufabez.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_off00004e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E38 5228 bytes
SHA-256: 9deed48deced9f3a3ce72cff68c6995dfca39649ef23bcd9c28d61adb0f72c0a
font_01_sfnt_off00006020.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6020 10904 bytes
SHA-256: 0e05415d7a7e0d70aa38c057416eadbc3187dccb6ff39d77ef42c633552813ed