Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63a329514353317…

MALICIOUS

PDF

71.5 KB Created: 2021-04-30 08:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02e3c013ed591846c5af58e67eda4a29 SHA-1: 257f0815a43306e5894d909e6bea24f5fbafb5ee SHA-256: e63a32951435331719b07920aaf1d2b941c67f4e106040f7f0497bce875d0b92
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, one of which is flagged as suspicious and leads to a PDF file. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of embedded URLs suggests an attempt to redirect the user to a malicious resource.

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 http://ar-intl.net/wp-content/plugins/super-forms/uploads/php/files/utf22f2lhdkqso4jigthmrghj6/derefezu.pdf
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083e585580c0---463275392.pdf
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084fb6fea74b---fiwowalurozugomokabisejiv.pdf
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d3e4f46ba0---63248226301.pdf
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/7857e07f82e30b418f67c35be60cdb4c/tubere.pdf
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/ce9fc716e84e7df9eecc8cf88bc8d0ed/4271992936.pdf
    • http://amuseonline.com/absite/userfiles/file/17242335385.pdf
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe0910b9e4---jivivipetiwuxubemefo.pdf
    • https://www.temsilcifirsatlari.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ed736b6132---jububeraxajidima.pdf
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1db85d0ca---wojaleporiforebomijasusob.pdf
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606feaaa72849---93594421895.pdf
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608885e5bbaf9---nuxepevowuxakivedil.pdf
    • https://www.electriclighting.com/wp-content/plugins/super-forms/uploads/php/files/9c1debb0c033e42876b771dd1863c3cb/97243631608.pdf
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737f0d6dfbd---3723635989.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=dividing+integers+worksheet+grade+7
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cce5.bin
1ace2aa92b801ea623dc3374014953f3cc5fd17af4746f0648f1fe9e8adb7fe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCE5 5140 bytes
font_01_sfnt_off0000de78.bin
1a9ff02aa60bda514f44a1506b443c00a7ce342b0ef1db6cb772d3379f0296c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE78 10800 bytes
font_02_sfnt_off0001031b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1031B 4324 bytes

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