Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d670d24d3433603…

MALICIOUS

PDF

73.2 KB Created: 2021-02-21 16:41:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: af3d93b0dbf2d8fc65590ce23eb275b9 SHA-1: 74fbbfe9b8002855bdbf18ff4d3dea450c25087b SHA-256: 6d670d24d3433603fb16650356a2939e9274e3224bb39e4fccb597d29ce633b2
104 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. It uses an invoice-themed lure. 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 0.9998

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
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://seumenha.ru/strik?utm_term=general+journal+entries+practice+questions+and+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5fdb89c6cf006.pdfIn PDF document text
    • http://dasaburaxad.22web.org/32298798616.pdfIn PDF document text
    • http://bitukab.iblogger.org/40563216905.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/idaihgZ/zombie_apocalypse_map_minecraft_1._14.pdfIn PDF document text
    • http://rutomatuwusu.22web.org/haha_song_ringtone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gesesasogibigaw.rf.gd/kubla_khan_poem_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/rasebivotugoruxo.pdfIn PDF document text
    • http://fufabufitilaf.epizy.com/54683423183.pdfIn PDF document text
    • http://kudovumajumiw.rf.gd/adda247_old_apk.pdfIn PDF document text
    • http://weferobiditikun.epizy.com/wh_questions_worksheets_for_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/regonobakuw.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/fokolikugorebusip.pdfIn PDF document text
    • http://tinosizifaxuful.epizy.com/hp_envy_4500_user_manual.pdfIn PDF document text
    • http://gumelojapa.epizy.com/perforated_sheet_supplier_in_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/jugago.pdfIn PDF document text
    • http://wonetone.rf.gd/evident_palo_alto_datasheet.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_off0000e16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16C 5392 bytes
SHA-256: 5f9f0784d3f2d6dc0ad67a38a7a3d6609999745ab941ada927f4ea5a046b9dbd
font_01_sfnt_off0000f3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DE 10372 bytes
SHA-256: c67d640a1ac71a650c6694974eb0fa627a4f2d236b8e239ad99aeec70f585146

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