Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea7c1b2958c00f5b…

MALICIOUS

PDF

94.2 KB Created: 2021-04-22 22:59:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 37801612772a447038aee0c65ecc8b3a SHA-1: b327728d067d8f5a8a4c0eed8fd6f8790cc78360 SHA-256: ea7c1b2958c00f5b8db7a760368634de7c9dc6ace5cfd6fb0568ecd16469e678
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://xajibur.ru/strik?utm_term=trigonometry+formula+sheet+pdf PDF link annotation
    • https://cdn.sqhk.co/mivuxakadu/zEy6jfh/civil_war_1861.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413005/normal_6059738538cc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489740/normal_5fe692af7b753.pdfIn PDF document text
    • https://cdn.sqhk.co/kimorotadopo/jbmjdhc/76483023797.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/atgd4TV/amazing_adventure_wipe_stunt_run_3d.pdfIn PDF document text
    • https://cdn.sqhk.co/xegogeji/hdhd4ji/60144245071.pdfIn PDF document text
    • https://cdn.sqhk.co/noruwotil/UY9sheQ/worizaka.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/lobiditazavuxinisuzova.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/8LYKeGo/cruise_deals_2021_all_inclusive.pdfIn PDF document text
    • https://cdn.sqhk.co/limexofure/ghgjd8W/osha_crystalline_silica_fact_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424645/normal_601bc4e933463.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/c1438c80-9317-4f0a-8d4c-b04ae9c2e1c0/death_of_the_author_roland_barthes_citation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1a57da0-e44e-4532-bad9-f371a0b0de0c/jekulodekepiveg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7e972c2-a859-427f-9a33-485a0f06e42d/data_structures_interview_questions_and_answers_for_freshers.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/baloncesto_definicion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3c6a0de-54f0-4333-b403-039f425edf20/what_jobs_can_you_get_with_a_masters_degree_in_finance.pdfIn PDF document text
    • http://pulitisagot.atwebpages.com/71195151585.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/maritime_navigation_apps_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eac1b6e-747e-4ef4-ad5f-5622486ee9af/fajadijoziwifepom.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F9 7064 bytes
SHA-256: 4b20e2a2accf58d63dd04b0cb04389e9ea15be5a4b11813352d2b26484230a76
font_01_sfnt_off0001185d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1185D 5504 bytes
SHA-256: 00ebc790676b8f813e05e74e44227d88633b11d3cfc5cafce596e54422ecbd29
font_02_sfnt_off00012af5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AF5 12216 bytes
SHA-256: 7c0fda1830392ac60dc9dceeb5cac2cfdd16f7f96b93a4551fde4cccf743f006
font_03_sfnt_off000154e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154E6 16324 bytes
SHA-256: ff7bb4c3bb3d966fe5b3e51476e6818264ce756bf0cfba0ba3400d7282d98e97

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