Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e544ac348699dbf…

MALICIOUS

PDF

76.3 KB Created: 2021-02-24 05:31:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0b6634faf3d20d5cc9e822adb22450bd SHA-1: 6bf08377fa19a8d5e561b1ed7e74c9b4b9810ffc SHA-256: 8e544ac348699dbfc499f7a6a10597351f56a5044d28a170c3a56e922586ba65
136 Risk Score

Malware Insights

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

This PDF was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic suggests the document is designed to trick users into downloading an encrypted archive, a common tactic for evading security scans. The embedded URL points to a suspicious domain, likely serving as a distribution point for the secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://jacksth.ru/strik?utm_term=how+to+reset+liftmaster+keypad PDF link annotation
    • http://mabay.fun/ownership_transfer_form_for_bike_in_hyderabadu0v17.pdfIn PDF document text
    • http://kosolamod.22web.org/android_bitmap_scale_image.pdfIn PDF document text
    • http://skidki-day.store/how_to_make_a_shooting_target_stand0hglr.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/hGe0rIm/60043339945.pdfIn PDF document text
    • https://cdn.sqhk.co/bawijodol/hbjfnih/vadimenijugivifanonaga.pdfIn PDF document text
    • http://fdvsefwfrw.space/299362948607fdf1.pdfIn PDF document text
    • http://mybestchan.online/mipabubelivemuxivesasodapqa3g.pdfIn PDF document text
    • http://fishing-rods2.club/acrobat_2017_helpxxpzqu.pdfIn PDF document text
    • http://parexapubep.iblogger.org/source_filmmaker_free_for_mac.pdfIn PDF document text
    • http://healthit.space/xopowotipazokejev0me9.pdfIn PDF document text
    • http://true-board1.club/37876853254vbo4x.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/eEIkDGC/r-_type_delta_ps1_download.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/idlim3K/54534866919.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/eiehcjf/4606441267.pdfIn PDF document text
    • http://webmastervlad.ru/the_pact_2012_imdbn54kz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mekazejirorarad.epizy.com/appointment_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/where_was_war_of_the_worlds_2005_filmed.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/bisomononarezatafujobituf.pdfIn PDF document text
    • http://davejizejago.rf.gd/forester_exam_answer_key_check.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/staar_test_2018_algebra_1.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/manpower_histogram_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/mendelian_genetics_worksheet.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_off0000ec97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC97 5404 bytes
SHA-256: b6a01f45100d2821456ed4fd48c4fdebc0261cac3296ba064768d0d15754e788
font_01_sfnt_off0000fef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF7 10784 bytes
SHA-256: c0e6948b9f6775f3380dc97bc9e43fe311b5aa007f024509b53158769fd2cd9d

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