Malicious PDF — malware analysis report

Static analysis result for SHA-256 eefa8dfca6319b05…

MALICIOUS

PDF

90.8 KB Created: 2021-02-22 11:05:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 071d2b712d1b26f633d6ddd205f1171f SHA-1: f0e0e3f9e066a15df7ba2a906567ddae4822d47d SHA-256: eefa8dfca6319b053622d84e27af814614d7f7cf42f3d97698a615727b4548f0
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI pointing to 'baarspo.ru' was extracted, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to movie titles, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/strik?utm_term=the+chronicles+of+narnia+full+movie+watch+online+free+english PDF link annotation
    • http://8gusevshop.space/438k9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_600e67fb395eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382784/normal_6018be28a55b1.pdfIn PDF document text
    • http://verification-help.com/bubble_answer_sheet_1-_100_a-_eyb06a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_6012fb982af41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475988/normal_5ff3304240cae.pdfIn PDF document text
    • http://nicepics.xyz/fidatapuboselepau2ryy.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/mghhbic/mod_ben_for_minecraft_bedwars.pdfIn PDF document text
    • https://cdn.sqhk.co/bavomizobe/cjigdgi/nazan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379720/normal_5fc57d8f985da.pdfIn PDF document text
    • http://cocobuka3.xyz/cymatics_video_free49t2l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494888/normal_600915bb451d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454429/normal_60037c453d353.pdfIn PDF document text
    • https://cdn.sqhk.co/xiwapusumoge/fHjaZlR/8152650005.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481841/normal_6004fb29722de.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/xidazeze/five_rights_of_medication_administration.pdfIn PDF document text
    • http://zitilidi.rf.gd/26226134524.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_off0001231a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1231A 5396 bytes
SHA-256: 251fe2331b317afbf8de23387180ced028f3999cb73f6a506e08ced0e509178f
font_01_sfnt_off00013561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13561 12352 bytes
SHA-256: 99b598aba9ece0cb8fc3a0aad6cb43ec8d2b066ae28d5587b5bcaf016262171d

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