Malicious PDF — malware analysis report

Static analysis result for SHA-256 33aa69e85a7af5bc…

MALICIOUS

PDF

75.0 KB Created: 2021-02-27 09:23:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a7ebb72b0e4e6dc31469b0fdc5f1c7cc SHA-1: 9a761374d92d314bc761009bb25ccac7bc1ae649 SHA-256: 33aa69e85a7af5bc81fa307caf1a9e0e7d2b26b35dff35bd3660cc1e8a38aad9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/wix?keyword=when+i+grow+up+worksheet PDF link annotation
    • http://golomashvanna.xyz/who_was_the_most_famous_artist_in_ancient_greecertw2x.pdfIn PDF document text
    • http://nagaxutunasom.22web.org/31146151782.pdfIn PDF document text
    • http://merishwheelrecords.com/pulumijukovolo79osg.pdfIn PDF document text
    • http://kinoxca.xyz/javuretukidewoladasae0se3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375889/normal_6000a653464f0.pdfIn PDF document text
    • http://dvigatel.guru/dls_19_unlimited_coins_profile._datsgct6.pdfIn PDF document text
    • http://miiliioner.xyz/partnership_agreement_philippinesnaejb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458144/normal_5fe2ccde4fb8e.pdfIn PDF document text
    • http://ubsvp.com/avent_breast_pump_manual_target80nx0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486221/normal_600322650d8fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369927/normal_6033fe3347712.pdfIn PDF document text
    • http://brumbum2.xyz/vugibaxajenamotewnnna1.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/fevobelijogal/what_is_a_radiative_zone.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/blue_parakeet_care_sheet.pdfIn PDF document text
    • http://dotixoxikal.rf.gd/sample_variance_of_uniform_distribution.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/digital_transformation_ppt_template_free.pdfIn PDF document text
    • http://devawuwu.rf.gd/completed_smart_goal_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/maximum_extent_of_laurentide_ice_sheet.pdfIn PDF document text
    • http://mejufupivu.epizy.com/37580155949.pdfIn PDF document text
    • http://majojevonomofu.rf.gd/clementi_sonatinas_sheet_music.pdfIn PDF document text
    • http://tuxefefili.epizy.com/ambedkar_college_wandoor_uniform.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_off0000ea1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1F 5008 bytes
SHA-256: 87d41310e7a894a487c1b2f3f0a30318e06b477eef283178e6ecc08c7f49748c
font_01_sfnt_off0000fb48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB48 10276 bytes
SHA-256: 1cf23d651bfa62d74033160302925516438f7a1df638c5492602824be8fa393d

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