Malicious PDF — malware analysis report

Static analysis result for SHA-256 038543999f297a2a…

MALICIOUS

PDF

65.2 KB Created: 2021-03-01 20:09:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 130da85d01eed034e341fde022e7d3bb SHA-1: e7dcedd36447298a8a582c8e5ca6b7fd03776c31 SHA-256: 038543999f297a2a8959cedbd7fa61031cdef8d66114ae41ca0a40338e8e55c7
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://yafferge.ru/award?keyword=the+monkey+king+2+trailer+in+hindi In PDF document text
    • https://cdn-cms.f-static.net/uploads/4458833/normal_60278c4f55fce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488315/normal_6027afbef3100.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393911/normal_5fd69aa66eaa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484990/normal_6014490508904.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387233/normal_5ffb35cade363.pdfIn PDF document text
    • https://cdn.sqhk.co/nivabetaz/9hc0gjC/download_slither_battle.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473379/normal_5fe855773b2d1.pdfIn PDF document text
    • http://idealslimitaly.site/one_of_us_is_lying_peacock_tv2qufv.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/viregujipowuru/paulo_freire_pedagogia_del_oprimido.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/44336358374.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/jeppesen_airway_manual_introduction.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/blender_apk_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/82950443548.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/85211095418.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_off0000c324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC324 5308 bytes
SHA-256: 035b196252578b1eb969d5689e0a14b5362ea713b0ec75d28bd3a2acbee5daa0
font_01_sfnt_off0000d50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50F 10248 bytes
SHA-256: 28611aec946d6e4f25ad819578ac4bd216c41c2c3b75b1b6f737b92d9b8bc92d