Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3d9757bcc07d5a…

MALICIOUS

PDF

97.1 KB Created: 2021-03-21 00:44:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5151cc1df99dc31b6a08d2aea4ab20b4 SHA-1: 99f4ba1d4d03a9413140bab9ed6bfeaea490fe41 SHA-256: 6a3d9757bcc07d5ae26305948b44fa81399ef41ec3b07e2f144b520f76d2e251
96 Risk Score

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://maypoin.ru/aws?utm_term=short+sword+fighting+styles PDF link annotation
    • http://es50off.pro/lg_washing_machine_engineer_near_mecbx2q.pdfIn PDF document text
    • https://cdn.sqhk.co/limexofure/NgfTnwU/kajewixejoj.pdfIn PDF document text
    • http://segwaywheelchair.ru/freelance_contractor_invoice_templateinmob.pdfIn PDF document text
    • http://lezozopose.iblogger.org/ribojolomi.pdfIn PDF document text
    • https://cdn.sqhk.co/wifopuzuxiba/gcjcihF/nfl_rush_gameday_apk.pdfIn PDF document text
    • http://reduslim-italia.website/mastering_bitcoin_unlocking_digital_cryptocurrencies_free67p4q.pdfIn PDF document text
    • https://cdn.sqhk.co/bumogebiz/f4bTij6/agri_export_app.pdfIn PDF document text
    • http://xajoraxi.22web.org/sql_server_database_engine_2017.pdfIn PDF document text
    • http://trysoda.pro/dsm_synology_user_guideln1kc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puxisozebipisal.rf.gd/buxagobubi.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/lazerivofi.pdfIn PDF document text
    • http://berojopuzenon.rf.gd/antivirus_norton_security.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/diaper_pail_that_uses_regular_garbage_bags.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/libro_techos_verdes.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/68302846547.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/ct_scan_contrast_consent_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/9656375545.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/wugetejupedujid.pdfIn PDF document text
    • http://limirosu.rf.gd/retomuvowobeligifumo.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/xovevimamuke.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_off00012dc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC3 4800 bytes
SHA-256: 7c54c400e3c1f8c45ea651acfcbf5ece9a4dc86f3b7b1d3c1223b9d16f219561
font_01_sfnt_off00013e80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E80 5256 bytes
SHA-256: 5a52a96bf200e58c1315086edfd0acaa897f047e79eeb4ea1d5af00a27b74e80
font_02_sfnt_off00015073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15073 11436 bytes
SHA-256: e5eca4dc9cd7dd24367e35c7b19f287c807dd57dddc88e77f310f7a8a0bfed77

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