Malicious PDF — malware analysis report

Static analysis result for SHA-256 fef2d6a3f7cbc285…

MALICIOUS

PDF

68.2 KB Created: 2021-02-15 01:55:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9eb6093b92c6c6493c7dd8abc231dadb SHA-1: 6c10b22d13b7df782804a08c10c0db47ab972c59 SHA-256: fef2d6a3f7cbc2853dfb3216322eabdc64eef06d43decdff02dcfc82dd0c46c5
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/wix?keyword=galaxy+universal+remote+apkpure In PDF document text
    • https://static.s123-cdn-static.com/uploads/4380536/normal_6007be7abe384.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372358/normal_6027dcaae439d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495985/normal_5ff8f067e53d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409420/normal_6025befc7b9fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/bhojpuri_gane_hd_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/human_circulatory_system_labeling_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/tecnologia_da_informao_ufrn.pdfIn PDF document text
    • http://jimeroxivekafos.epizy.com/27485348702.pdfIn PDF document text
    • http://pegolika.rf.gd/nemiponupazi.pdfIn PDF document text
    • http://gifimedirawi.epizy.com/12116633838.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/hypothesis_vs_theory_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/73736500042.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/46012907037.pdfIn PDF document text
    • http://nirutavikuda.epizy.com/gotham_extra_bold_font.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/faloxezijoraluguvade.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_off0000ce81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE81 5292 bytes
SHA-256: 753c4f67ceb7041bae4103b54b4a79c5a0b1707d7e4eb3d19cf5859b24bbe66b
font_01_sfnt_off0000e079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE079 10640 bytes
SHA-256: 5e55505391ea1d9dc344979fd25072f99aa1ddf25d4e69c6ba3db6e9476cd7c2