Malicious PDF — malware analysis report

Static analysis result for SHA-256 6411d508c457ebd1…

MALICIOUS

PDF

76.7 KB Created: 2021-03-17 16:07:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: ae00d0b19ecbf5832474fd87dbb07611 SHA-1: 96dbb9fda375f633777ca2f50079bdeb07478a3b SHA-256: 6411d508c457ebd1cddd36fb88d01d7347ce575e2d447e5eb4d5f630eda7ad81
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 0.9997

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://nipisod.ru/wix?keyword=virtual+clothes+horse PDF link annotation
    • https://cdn.sqhk.co/jinubodilev/gifiihc/26178270895.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365627/normal_5fe142662fbd2.pdfIn PDF document text
    • https://cdn.sqhk.co/nefakovuwot/fggEnic/houston_bcycle_sabine_bridge.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486365/normal_5ff6abda2a303.pdfIn PDF document text
    • https://cdn.sqhk.co/noxivudeva/J4Yhdgd/9034318802.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386091/normal_5fd7add695f5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476270/normal_5fda1e7b9e49c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zonokuje.epizy.com/ratixawu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8024375-84f1-45e6-bec1-f8d7492723fc/dewalt_cordless_drill_18v_brushless.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45db0105-4b7c-4570-b25d-cf7692846dae/jump_rope_cardio_calories.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/mupaderot.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/improve_handwriting_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/audio_driver_for_this_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/dragon_quest_xi_walkthrough_gamerguides.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/73111420194.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/how_to_teach_english_as_a_second_language_in_kindergarten.pdfIn PDF document text
    • http://jivugojazop.epizy.com/dell_bluetooth_driver_for_windows_8._1.pdfIn PDF document text
    • http://gusagokasu.epizy.com/astrazeneca_pipeline.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/52678933467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cade3376-cb5c-440c-a1d0-fd51b1e8a57b/gezibepisowep.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_off0000f1d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D5 4852 bytes
SHA-256: 83041850ab2053515dd44cd9404fe4b75f0f6984c558050ba1ce1ec732841537
font_01_sfnt_off0001024b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024B 10524 bytes
SHA-256: 20509ef83a50a9d9631edcd70f546e15d9f6c2da14348665da6d8000d400c9d3

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