Malicious PDF — malware analysis report

Static analysis result for SHA-256 4da3ce4b037ad90a…

MALICIOUS

PDF

80.9 KB Created: 2021-03-14 00:47:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 98a548e951b2bf8a24a85628dddb5e00 SHA-1: 997cf4543e761cab8e6dbfe9a90036c69051d52f SHA-256: 4da3ce4b037ad90ac945b07f24ea4ae41225946dd3d0d62e4172a3864f9dfc11
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://resalured.ru/strik?utm_term=cvc+word+families+pdf PDF link annotation
    • http://javebamugizal.66ghz.com/inferences_worksheet_7th_grade.pdfIn PDF document text
    • http://witejafekomip.22web.org/esl_word_puzzle_worksheets.pdfIn PDF document text
    • http://lexukugeru.22web.org/lodesizevejujosegaxa.pdfIn PDF document text
    • http://trokot-online.xyz/wukijikidizopulewog7a73.pdfIn PDF document text
    • http://xufadaxedi.22web.org/wasojuxunotamat.pdfIn PDF document text
    • http://mandarins.space/26620177228vccud.pdfIn PDF document text
    • http://visatog.22web.org/cissp_cbk_5th_edition.pdfIn PDF document text
    • http://help-igcopyright.xyz/770838198501ay28.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kuboki/how_long_to_jump_rope_to_see_results.pdfIn PDF document text
    • http://maviwapas.epizy.com/kaththi_villain_theme_music_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/bavosadanexekiwotufevomud.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/blacklist_app_for_android_free.pdfIn PDF document text
    • http://jegovogetaferop.epizy.com/what_are_the_multiple_intelligences.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4bf1c0b-7600-4918-89c7-94e7a795b054/98808336811.pdfIn PDF document text
    • http://zafuriket.rf.gd/29080883417.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3194185b-1077-4648-a7ef-ca45a5d922c1/how_much_is_a_cell_phone_ticket_in_california_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/gogoxowiniza/51239768053.pdfIn PDF document text
    • http://wisimuru.rf.gd/bipulomila.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/9601670116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a8194a4-17c7-4750-914f-d7e8769c8ae1/dufokezavizipuxe.pdfIn PDF document text
    • http://vimitafukufes.rf.gd/forensic_audit_report_format.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FC 5076 bytes
SHA-256: 75cc81067a03096fb89f419bc5fc429ae45e0668390b3ccf926dfd1a73488c90
font_01_sfnt_off00010250.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10250 11144 bytes
SHA-256: ea7a64ce32f24f76a2ae7e765fd018844ecc464891a34fc5324cce69605b05e9
font_02_sfnt_off00012854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12854 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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