Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cb3311559491435…

MALICIOUS

PDF

76.1 KB Created: 2021-04-26 21:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: dc94e9485dced39b2c530a6c71974314 SHA-1: 304398ca54120d394e99ed87c26244a8f68fe337 SHA-256: 5cb3311559491435cf2d2708410305a87bded643c779df329a6c165af68f6d94
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a movie download link, likely intended to trick the user into visiting a phishing or malware distribution site. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing attack delivered as an attachment. No scripts were extracted, but the presence of external URIs points to a download or redirection attempt.

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://jumiwimov.ru/strik?utm_term=watch+blue+is+the+warmest+color+eng+sub PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374379/normal_604e30c04c661.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482191/normal_5fe910e590ecc.pdfIn PDF document text
    • http://fumigatoff.online/autocad_3ds_max_for_mactijnb.pdfIn PDF document text
    • http://it50discount.pro/9859611769901ljx.pdfIn PDF document text
    • http://se-mrush.com/509624378229oz5r.pdfIn PDF document text
    • http://mkr-olimp.info/1327255381rgj7m.pdfIn PDF document text
    • http://carluxepaint.site/wijujoletogafha9mt.pdfIn PDF document text
    • http://basvuruizleme.online/minecraft_launcher_jar_downloadlpixi.pdfIn PDF document text
    • http://fortuneocredit.com/2131061146x7ioe.pdfIn PDF document text
    • http://masajsalonunuz.com/dafudep1ul4d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_2a5ce233551a49c991318f93307e08eb.pdf?index=trueIn PDF document text
    • https://12a3aa02-022d-4218-8efb-90aa4388683d.filesusr.com/ugd/6dfd9b_9dc8895868634aba8128089bc45a1da9.pdf?index=trueIn PDF document text
    • https://6fd4412c-3e6e-4f21-a9af-8137ffc6c0d9.filesusr.com/ugd/03469c_8d6452d81c5a4af996661c2bfc1d83e0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zasepo/78906971054.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/domeven.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/lightly_padded_coach_jacket.pdfIn PDF document text
    • https://s3.amazonaws.com/dojonuta/sheet_music_for_in_the_bleak_midwinter.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eadd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADD 5460 bytes
SHA-256: fa347908becfc53d9620f5e4a3374713a12c872112ebe3232674787534fec9e1
font_01_sfnt_off0000fd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD57 11116 bytes
SHA-256: bab9bfde877af4a1efef5e6be5de1e7378c30526e558002b3db4ed2d2074f8cb

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