Malicious PDF — malware analysis report

Static analysis result for SHA-256 393ae37eb885c6be…

MALICIOUS

PDF

76.2 KB Created: 2021-02-17 01:18:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 49887a49c83432c2c8a3396a79a0e967 SHA-1: 928f2c35e63d3674309a4f8119fbe3bdb50b1860 SHA-256: 393ae37eb885c6be08ef45b90e047b3eac08b3c33130f3061e0043c812bb60df
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, contains text related to a song download, suggesting a social engineering lure. An external URI pointing to 'seumenha.ru' was extracted, which is likely part of the attack chain to deliver a payload or redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/123?utm_term=one+last+night+fifty+shades+of+grey+song+free+download PDF link annotation
    • http://manipiso.iblogger.org/lol_draven_build_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/vRjcihs/10565621865.pdfIn PDF document text
    • http://sarepoxorak.22web.org/97113732424.pdfIn PDF document text
    • http://besuxiju.22web.org/abacus_72_installation_manual.pdfIn PDF document text
    • http://www19216801.site/eso_best_race_for_necromancerqcm2a.pdfIn PDF document text
    • http://hargotel.xyz/dijikoxapaxasidosamigyfmto.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vemireme.epizy.com/banner_saga_apk_award.pdfIn PDF document text
    • http://koxogulu.rf.gd/41700074812.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/magento_2_override_template_file.pdfIn PDF document text
    • http://bakenexiradofo.epizy.com/31525105648.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/bookmark_mockup_free.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/mindtap_answers_history.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/abduction_movie_hdpopcorn.pdfIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/rasagudenitivugemugibe.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/36530259576.pdfIn PDF document text
    • http://tejutixofefadi.rf.gd/first_tech_credit_union_rate_sheet.pdfIn PDF document text
    • http://wivufaw.epizy.com/77445287351.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_off0000e661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE661 5392 bytes
SHA-256: 84a97555a930d29798cdf1d7f490eab61cd29bca006760f4f80ad70b063bec8b
font_01_sfnt_off0000f8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C4 12252 bytes
SHA-256: ea75fab00dba8813255aceeb86b27eec1331e2cab9cd149b236b92fac179b354

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