Malicious PDF — malware analysis report

Static analysis result for SHA-256 027baafdaf1a6ce8…

MALICIOUS

PDF

74.7 KB Created: 2021-03-02 14:05:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: af809fa92195735a002c3de2cfa45a58 SHA-1: 879cd535e5f2420f72a7f3096d0ebaeec558eef2 SHA-256: 027baafdaf1a6ce86669545af06273af341e5d0f7868f8cbc84eb165db7ebeb7
144 Risk Score

Malware Insights

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

This PDF was flagged by a machine learning classifier and ClamAV as malicious, with a high probability of being a phishing or trojan delivery mechanism. The heuristics indicate lures related to urgency and password-protected archives, suggesting an attempt to trick the user into downloading a secondary payload. The embedded URL points to a suspicious domain, likely serving the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://bologen.ru/123?utm_term=tintin+2020+film PDF link annotation
    • https://cdn.sqhk.co/nububufi/hLifLjg/94484251907.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/zikupumibuvefcrm4c.pdfIn PDF document text
    • https://cdn.sqhk.co/rilixuzewiv/hjbkjdl/76326579089.pdfIn PDF document text
    • http://buytoday.cc/relion_bp300w_manualzpuvh.pdfIn PDF document text
    • http://tells.fun/is_disney_world_open_in_januaryel8am.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/tevaro.pdfIn PDF document text
    • https://s3.amazonaws.com/xanunafojuloki/free_popular_clarinet_sheet_music.pdfIn PDF document text
    • http://puzufowos.epizy.com/fapozetavijuju.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/car_wash_business_plan_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/26736020477.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/bescherelle_espagnol_gratuit.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/goodreads_apk_free.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/importance_of_interpretative_reporting_in_journalism.pdfIn PDF document text
    • http://zetamox.epizy.com/vupozow.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/consumer_reports_username_password_library.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/air_intake_system_working.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/asthma_gina_guidelines.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_off0000e877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE877 4652 bytes
SHA-256: c289e8033b899a2770c4fe9fb99b2cc040095acd296443346710833a335789a7
font_01_sfnt_off0000f845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF845 11140 bytes
SHA-256: dd7d785a3958fb5ce98342bcec613c89a2e03f5cd4a0dfd7947e606f29e8530c

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