Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bcf368a374f6949…

MALICIOUS

PDF

90.6 KB Created: 2021-03-11 18:54:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7305c060987e54f05ba317f1e96a0156 SHA-1: 835f0e4fb2c256cbe3392c49c501a8701c7e3568 SHA-256: 7bcf368a374f6949c91e9a80a07bde521566d948e46221c14b4388595fe0de9b
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 0.9998

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://ponafet.ru/wix?keyword=climate+change+worksheet PDF link annotation
    • https://cdn.sqhk.co/gebunemif/nMbjgh1/zombie_farm_2_petition.pdfIn PDF document text
    • https://cdn.sqhk.co/wediximewoza/iJjejeU/net_speed_meter_exe.pdfIn PDF document text
    • http://nutetuxiv.mygamesonline.org/fidakozasokalozo.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/c7Wtv0B/hamster_life_cycle_images.pdfIn PDF document text
    • https://cdn.sqhk.co/sevijeruba/jjbhage/migokiwelox.pdfIn PDF document text
    • http://gosepakaf.getenjoyment.net/4397097263.pdfIn PDF document text
    • https://cdn.sqhk.co/ritasuxa/hbhijgg/64848372621.pdfIn PDF document text
    • https://cdn.sqhk.co/dolitife/D7iiggH/hockey_jersey_customization_near_me.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/592052a5-297a-4819-8472-6338e544f29f/toto_toilet_replacement_parts_handle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5473c5a8-e7db-4cd8-aae6-b78846b3e824/mitel_5312_ip_phone_turn_off_voicemail.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f6b8cbb-13ce-498e-b9d1-2f102abfe9da/what_is_pst_migration_office_365.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d30537c-6336-4dc0-a21b-0cced57b7018/triangle_proofs_worksheet_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29733b5b-d67d-4429-94cc-ed67c1fd21c3/educational_psychology_for_a_school_teacher_with_real_classroom_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09aa6b76-fb7d-4eff-b1ba-14edc32a8b75/united_states_army_sergeants_major_academy_fort_bliss_tx_79918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aad2e60b-a29a-46c6-9e53-4502f0db81b9/why_do_smoke_detectors_go_off_when_power_goes_out.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_off0001270d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1270D 5272 bytes
SHA-256: 6ccdf388c8307445ff8048cbb81f293ee65939ffde704a06b175814a2a3995da
font_01_sfnt_off000138d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138D8 10744 bytes
SHA-256: 72ed347c44fb509872d249fb3cc94130bf32717d597a0cbd201c0f30f165314e

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