Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a5eeaa573daa7f5…

MALICIOUS

PDF

73.1 KB Created: 2021-03-05 00:20:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 98c46f81983044cb1f654682ea34b34c SHA-1: 263ee96fbb761630a24adf8b62eedc5c13db77da SHA-256: 8a5eeaa573daa7f50b524a8d23725178c7237b35d9e9058ebaffc016c5f3a4b5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ponafet.ru/wix?keyword=section+6.3+metamorphic+rocks+worksheet+answers PDF link annotation
    • http://blankid.ru/51680992369xrc14.pdfIn PDF document text
    • http://bred-enligne.com/enrique_iglesias_bailando_mp3_downlotiipk.pdfIn PDF document text
    • http://rufujatev.iblogger.org/leave_application_format_for_employee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393353/normal_603e34f7c9cfa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421460/normal_60140ec36d3e7.pdfIn PDF document text
    • http://twoup-viktoria.online/kirogajevefitowokuzudutudn2wk.pdfIn PDF document text
    • http://yoga-fitness.space/accounting_principles_11th_editionjj9ng.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485591/normal_60179b869e17d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370284/normal_602dfe0169289.pdfIn PDF document text
    • http://instapriz365.site/what_are_the_12_body_systems_and_their_functions1um62.pdfIn PDF document text
    • http://disconto50.info/padi_rescue_diver_manualn06qk.pdfIn PDF document text
    • http://instapriz365.online/chevy_ss_sedan_manual_transmission_for_salel5q30.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vudatuvabejosix.epizy.com/driver_asus_a455l_windows_8.pdfIn PDF document text
    • https://6478d21b-237c-41b5-add8-96d7b9819624.filesusr.com/ugd/c7ef1a_c8218c24d8414863a40cc90a6a67a8ab.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/aplaceformom_phone_number.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/zemafemowofawuju.pdfIn PDF document text
    • http://jubegovasoranaz.rf.gd/79799270317.pdfIn PDF document text
    • http://jetumodegupejit.rf.gd/fire_alarm_inspection_report_form.pdfIn PDF document text
    • http://kedumuwimafam.rf.gd/what_does_standby_mean_in_the_military.pdfIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_23c8e3d4f7f44416bc989c17a47fffea.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB6 5752 bytes
SHA-256: 78c4ba7a8d17cc7526ecb7c33444007b17303e4dfcd95c628d356f44c4ad780b
font_01_sfnt_off0000de35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE35 10280 bytes
SHA-256: 7956a66fc2386d60879f786c706f970b2a10c6c3c2ad132fd21aaf5c3a6f8e9f
font_02_sfnt_off000101ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AE 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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