Malicious PDF — malware analysis report

Static analysis result for SHA-256 07bbae2ab7e73afe…

MALICIOUS

PDF

72.5 KB Created: 2021-02-25 22:24:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e451574f5c9f08d45282eeeaafdc34a4 SHA-1: b23f825ba1228ea4c980058ac455d73197b70073 SHA-256: 07bbae2ab7e73afecf361e563a69ea840f6d083186ccbf7621dbb945efa0e060
194 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
  • 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/wb?keyword=how%20does%20a%20shark%20protect%20itself In PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/hdjcWKE/artificial_intelligence_robot_dog.pdfIn PDF document text
    • http://pajebunekelisom.22web.org/dovezukikimexita.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/ijbcXNF/fairy_tale_high_heels.pdfIn PDF document text
    • http://naluwuzamo.22web.org/citizens_advice_bureau_complaint_letter_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzetuzame/q3Zvhfz/39030436778.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/how_much_did_indie_games_make.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/mEgeVlF/chain_react_pro_apk.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/midaguvimabof/adjective_form_of_bleach.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/alto_s_odyssey_game.pdfIn PDF document text
    • http://sazerubewufuzuk.epizy.com/36622533111.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/11208750562.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/how_to_clean_convection_oven_microwave.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/24953844942.pdfIn PDF document text
    • http://vifowas.epizy.com/wepusoz.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/avatar_musik_indonesia_mod_apk_data.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/azhage_azhage_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/89688008081.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/lee_county_florida_warranty_deed_form.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_off0000dd71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD71 5360 bytes
SHA-256: 9cf0af277ed466dff7ce13d930f6b5e0bea40b1e79a5aabc047647e73cc43cf8
font_01_sfnt_off0000efb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB9 10972 bytes
SHA-256: d81ffcb012e057cabd832ec7e5afe5d8857809c79764ed706b27d72deb8770c4

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