Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d506b81d02a7726…

MALICIOUS

PDF

69.3 KB Created: 2021-02-25 18:53:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2c6d6701459617b86e681f717e9df9ab SHA-1: 751177aeef5075e736fbd01b6030d353dce1f961 SHA-256: 4d506b81d02a772667cb88147ff18c4229165460378ada599b37044839ba6885
136 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
  • 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://bologen.ru/wix?keyword=matthew+coleman+md PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493916/normal_5ff0a20d8d8c8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368265/normal_5fc8685619126.pdfIn PDF document text
    • http://1xbet-registrat.site/devoxg6n9p.pdfIn PDF document text
    • http://pixelbarista.com/honeywell_focuspro_5000_user_guide9cud8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417824/normal_6027fbd1d5223.pdfIn PDF document text
    • http://getizibibi.22web.org/98708528942.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/is_ge_cafe_good.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393188/normal_6007ef30a8839.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/gavexafigemixiwu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453907/normal_6000fa144493f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468828/normal_5ff6c7fec6593.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391599/normal_6027529dcaac5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472775/normal_601e277b0b1ed.pdfIn PDF document text
    • http://lurobur.iblogger.org/must_watch_anime_series_2018.pdfIn PDF document text
    • http://fitit.space/pdfmake_angular_5_examples66gq.pdfIn PDF document text
    • http://believes.space/jarojidofurulevel3jec.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://giguvinelixegol.rf.gd/elementor_template_json_file_free.pdfIn PDF document text
    • http://dilezupuforew.epizy.com/vukarefu.pdfIn PDF document text
    • http://nedepufeto.epizy.com/44929448771.pdfIn PDF document text
    • http://zetowimular.rf.gd/74099326072.pdfIn PDF document text
    • http://lexanowojuraja.epizy.com/25072309692.pdfIn PDF document text
    • http://fumebuz.rf.gd/53181930747.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_off0000d4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C1 5000 bytes
SHA-256: 2cd8bdbbb4bcc8ca9f28cac45fe712174309cefc99463bb698aa183fb73e6d08
font_01_sfnt_off0000e5b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B9 10000 bytes
SHA-256: 3897624a09ebe8ba9da8c8feb15abbab458832f6ba4085ebd3674907bd1dd7e1

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