Malicious PDF — malware analysis report

Static analysis result for SHA-256 19ed6e8ae938cf07…

MALICIOUS

PDF

78.1 KB Created: 2021-02-05 00:44:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b3edba4ce72cee1d7f6f53cbe377ff5c SHA-1: afde3ce7624aa4bbd48b48c4a1706ff3549b5fb1 SHA-256: 19ed6e8ae938cf07a732ad59300d04079c6a2ff382801832306fd757afe8484d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/wb?keyword=jasper%20report%20plugin%20for%20netbeans In PDF document text
    • https://cdn-cms.f-static.net/uploads/4485718/normal_600ee96e6f248.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382773/normal_5fcf784644024.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365621/normal_5fe11851a938d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496616/normal_601b4e8aa6492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_600d1c8bc1665.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475382/normal_5fe91573d6725.pdfIn PDF document text
    • http://santaparker.store/lojoseruxepobufasolowivizsbwi4.pdfIn PDF document text
    • http://megatorg.ru/cambridge_primary_english_3qxc58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476595/normal_6002b4dca1e6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380411/normal_5fdf1594b6869.pdfIn PDF document text
    • http://leadtop.co/checklist_for_witcher_3_wild_hunt_ps43dqp0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406473/normal_5ff8733f6f6e5.pdfIn PDF document text
    • http://m-laskin.ru/mindshift_app_costpcw26.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/wufujudisu/taber_s_medical_dictionary_apk_data.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/auditor_general_bursary_application_form_2018.pdfIn PDF document text
    • https://netbeans.org/In 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_off0000f160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF160 5200 bytes
SHA-256: 288fff3e366ad10ba1a614f659451d19a0483c2f3ab0e1afd1a443cbcfc61941
font_01_sfnt_off0001031f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031F 11900 bytes
SHA-256: f71f2f209af276c0d91f657b6810dd7d50a6a2a8cee94cd9f7b3c540df9f06b0