Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec73e059bfc99fd…

MALICIOUS

PDF

72.1 KB Created: 2021-02-18 16:53:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0063295eadc34b5601a955539e1e3847 SHA-1: 7131d33f6945e12ec571c2204a3bd51943176fac SHA-256: aec73e059bfc99fdc247df035776b39e5fb0f54ab238cb458dc002be079d5dcf
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=ph+miracle+for+cancer+pdf PDF link annotation
    • https://cdn.sqhk.co/livefivepa/Rhbhiie/airbnb_customer_service_number_california.pdfIn PDF document text
    • https://rozazokosu.weebly.com/uploads/1/3/0/8/130813972/2bea638eee349b.pdfIn PDF document text
    • https://jexujomasok.weebly.com/uploads/1/3/5/3/135343442/metafun.pdfIn PDF document text
    • https://moxizeza.weebly.com/uploads/1/3/3/9/133999163/ba01a6cc.pdfIn PDF document text
    • http://dejasis.iblogger.org/ionic_4_login_page_template_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370285/normal_6004ebafae476.pdfIn PDF document text
    • https://waforavorodi.weebly.com/uploads/1/3/4/3/134314120/670b35b.pdfIn PDF document text
    • https://binigikuvoloxog.weebly.com/uploads/1/3/5/3/135332024/59e067c16fa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puwagof.rf.gd/ferdinando_carulli_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/26703152203.pdfIn PDF document text
    • http://rawuwad.epizy.com/terraria_android_full_game_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/37313492414.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/julejewefububanugugupi.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/tax_audit_report_due_date_extension.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_off0000dfbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBB 5216 bytes
SHA-256: d8ed24c963c70c886e13b0e1e14758034e7aebae3638633128075585772294aa
font_01_sfnt_off0000f14f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF14F 10140 bytes
SHA-256: 600b6304c899afa25deb3a6ea10ff9cdb8881d8b76d3727c0148c0f18e2141dd