Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a5d3ef8b53834b…

MALICIOUS

PDF

70.4 KB Created: 2021-02-18 09:06:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 58c16a62411eabf325ad37f4566cd93c SHA-1: e1cb8411e3d8ab4e7cb53384b73506146537e5c0 SHA-256: 07a5d3ef8b53834b0baf8c2d2f66c92e924abce6ec7f71012d1ede3730609182
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=teamviewer+apk+android+4.4.2 In PDF document text
    • http://francobusiness.com/resume_templates_in_wordg02r3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403539/normal_6018677d7fb44.pdfIn PDF document text
    • http://sovetnik53.ru/81445987756jfvbr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413966/normal_60269ec5eca7a.pdfIn PDF document text
    • http://sanasojan.22web.org/ableton_live_9_free_full_version.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5fd1739941347.pdfIn PDF document text
    • http://vakekaninu.iblogger.org/2014_chevy_malibu_ls_manual.pdfIn PDF document text
    • http://tesar-krd.ru/word_a7_envelope_template0auxd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pexaniruvuwuwe.rf.gd/cara_buat_cv_file.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/plataforma_lattes_actualizar_curriculum.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/simixe.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/lumoraxurijabizeg.pdfIn PDF document text
    • http://duxawunofuror.epizy.com/puwovamawam.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/29888258542.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/82546731599.pdfIn PDF document text
    • http://kagilabitivibe.epizy.com/sap_crystal_reports_10.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/susamexigemi.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/linkin_park_bleed_it_out_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/gordon_leishman_principles_of_helicopter_aerodynamics.pdfIn PDF document text
    • http://bibibojusajol.rf.gd/dilwala_bhojpuri_movie_comedy.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_off0000d794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD794 5312 bytes
SHA-256: 95051a94a2fa09f1a9cab9542818a4033a9050297e913490efefa7c8b8fb783a
font_01_sfnt_off0000e9b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B1 10184 bytes
SHA-256: f46628d5f7dc155b624314f793482e1e4f58560f137aa8bde77a21f9427b45d8

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