Malicious PDF — malware analysis report

Static analysis result for SHA-256 7141460ba35d40a4…

MALICIOUS

PDF

84.0 KB Created: 2021-01-24 16:00:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 1a8e118cfcea03251244e6fe499f0036 SHA-1: d8a2f7e50414794a6bbdf23b5daee33c32035f76 SHA-256: 7141460ba35d40a4c8bdf98c2e5e9399ca9d78a48db6ecd38cea8a78142653c4
136 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
  • 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/aws?utm_term=scribblenauts+unlimited+parents+guide PDF link annotation
    • https://cdn.sqhk.co/gisatajofo/ahaM4ii/13240607880.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/zshgy3x/zomokefonabokikejuviba.pdfIn PDF document text
    • https://cdn.sqhk.co/rodesedaded/EfhgePs/wefesuzirizojugop.pdfIn PDF document text
    • https://cdn.sqhk.co/munuluxel/8yEK8PP/juvisep.pdfIn PDF document text
    • https://cdn.sqhk.co/sesexibanobu/9OhxWge/search_quran_by_voice.pdfIn PDF document text
    • https://cdn.sqhk.co/muwazubivotu/dR6jahh/eric_church_songs_popular.pdfIn PDF document text
    • https://cdn.sqhk.co/gatutojuse/cngfjbU/31343694827.pdfIn PDF document text
    • https://cdn.sqhk.co/pirujezexod/2ABFxqq/80047721325.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/genedesowul/rumasutobuxavewenu.pdfIn PDF document text
    • http://xeravujowa.epizy.com/tolofufadifolegin.pdfIn PDF document text
    • https://s3.amazonaws.com/rufonali/46142871108.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/portal_knights_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/heinemann_active_maths_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/adjektivdeklination_deutsch.pdfIn PDF document text
    • http://gegavolaful.epizy.com/piriformis_hip_pain_walking.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_off00010bc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC3 5636 bytes
SHA-256: cc334bca62822c62ab242ae5b98f8d3254968a973c108afb037f7a55bdbd2cd1
font_01_sfnt_off00011ecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECB 10756 bytes
SHA-256: 842fea1618b1a50878ea1e639ff7354e1fb561ca34f8e4525cb8f3757d37a783