Malicious PDF — malware analysis report

Static analysis result for SHA-256 7710e6a12be26bec…

MALICIOUS

PDF

74.1 KB Created: 2021-02-03 01:43:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 765acc8524091b1c13867d14c57dcd6e SHA-1: 7cd338aeea238b27f886119fdd7299c7ef9f1be0 SHA-256: 7710e6a12be26becbee5fcb2fb792ac34bd5c3f11efbae7028e802c10a3986c5
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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/wb?keyword=advance%20directive%20form%20wisconsin PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409257/normal_6007c0df02457.pdfIn PDF document text
    • https://dijamolilum.weebly.com/uploads/1/3/5/3/135347404/sonivalozofu.pdfIn PDF document text
    • https://bolubevegu.weebly.com/uploads/1/3/1/4/131454373/nesazunovopeviza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464072/normal_5fe284c0d0af7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417403/normal_5ffa512a113bf.pdfIn PDF document text
    • https://liwujozixo.weebly.com/uploads/1/3/4/4/134497145/9461857.pdfIn PDF document text
    • http://gimakelodikovij.iblogger.org/app_bancomer_movil_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492875/normal_600e050733368.pdfIn PDF document text
    • https://sukorason.weebly.com/uploads/1/3/4/5/134578332/6146462.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486963/normal_5fde7d29d3529.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/vajefam/74869762764.pdfIn PDF document text
    • http://lusunumef.rf.gd/battle_trip_kordramas.pdfIn PDF document text
    • http://nemunuj.rf.gd/wedding_cake_recipe_book.pdfIn PDF document text
    • http://wobuwikag.epizy.com/5549701304.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/zosewafizolujimig.pdfIn PDF document text
    • http://jegovogetaferop.epizy.com/indesign_to_word_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/mentee_questionnaire_form.pdfIn PDF document text
    • http://kevarivujez.rf.gd/birth_plan_template_au.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_off0000e3b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B2 5276 bytes
SHA-256: 4edf21efbf448235f59b0d61a2b54d6a9b476268a1971643d55e676b9b5db521
font_01_sfnt_off0000f5a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A4 11424 bytes
SHA-256: 96c86024a722863e5f448d59fad72e911438afeec1601a4e3b1359150b9db8a9