Malicious PDF — malware analysis report

Static analysis result for SHA-256 464ec34770d7efe8…

MALICIOUS

PDF

72.9 KB Created: 2021-01-26 23:01:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 202f2dd4036e5208f69d374a0ad78f9f SHA-1: 8a18529b9fa42957587f8f835eaeddf883ffdc09 SHA-256: 464ec34770d7efe826f0cb579ef1dc49545fcdd76dd56386ee15955dfe30de00
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/123?utm_term=abandoned+parents+the+devil%2527s+dilemma PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485176/normal_5fdb932fec511.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_600eb8cf365c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374013/normal_5fdf2b6081dc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377114/normal_5ffa3eae12b53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416131/normal_6005bde19a879.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478141/normal_6005206763717.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372723/normal_5fc9b6d454c68.pdfIn PDF document text
    • https://cdn.sqhk.co/gutipefu/Ngijije/rally_car_racing_texas.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/sajezife/basic_english_workbook.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/pifigawijibatugorej.pdfIn PDF document text
    • http://novosumagib.epizy.com/xefibajowusaxakaf.pdfIn PDF document text
    • http://segudufarus.epizy.com/que_es_coliformes_en_el_agua.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/live_stream_tv_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/biodegradable_plastic_from_corn_starch.pdfIn PDF document text
    • http://juranakowi.rf.gd/58525866365.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_off0000df34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF34 5420 bytes
SHA-256: e57983c02281ac7048e91a8c1f00725898e46966a700badb4032bd425765c6de
font_01_sfnt_off0000f182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF182 11020 bytes
SHA-256: 14b072434da1285ff57f49f23754a2d8f7aa3e426f9329521d283dae614a1ef3