Malicious PDF — malware analysis report

Static analysis result for SHA-256 cedccfc04f03a65c…

MALICIOUS

PDF

79.6 KB Created: 2022-06-01 00:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 19df97efe87073770aa4728dd9bb09d0 SHA-1: 529e27b6b42bca5017139ffd242c6218dd025397 SHA-256: cedccfc04f03a65ca3f66fd00e727f2164ae8edd398d1511deaf99a5c5fc6a45
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious domain, and numerous other URLs that are likely part of a phishing or malware distribution campaign. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of multiple PDF-related heuristics and external URLs strongly suggests a malicious intent to redirect the user to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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://colod.co.za/YmrXLWy8?keyword=english%20grammar%20worksheets%20for%20class%208%20cbse%20with%20answers%20book
    • http://greeninfrabd.com/assets/ckeditor/kcfinder/upload/files/wasufojutabewezubunifa.pdf
    • https://hainescentreasia.com/images/file/73697188569.pdf
    • http://www.fdconsult.qa/public/uploads/cms_files/miledupemokegakejimosejaz.pdf
    • http://formasrl.com/admin/kcfinder/upload/files/ralofejirosedivu.pdf
    • http://kptar.com.br/kcfinder/upload/files/36360530866.pdf
    • https://vuwarudud.weebly.com/uploads/1/3/5/3/135314702/110268.pdf
    • https://htkvn.vn/public/admin/plugins/kcfinder/upload/files/92034176561.pdf
    • https://xusofudubivo.weebly.com/uploads/1/3/0/7/130775679/zesuvarum-ragimufikona-sipudabowo-zonapivogimu.pdf
    • https://pupupobinizoto.weebly.com/uploads/1/3/1/3/131384436/464060.pdf
    • https://jfd.news/app/webroot/uploads/files/soxoxebosevosesawisafe.pdf
    • https://celebicatering.com/upload/ckfinder/files/kovuwulalidolifagokapadi.pdf
    • https://kutabafimuv.weebly.com/uploads/1/3/1/3/131379381/tovufavafesijiz-zapawowe-kizabovemapome.pdf
    • https://www.ibericaseguridad.com/admin/kcfinder/upload/files/kezutefugaripigom.pdf
    • http://meandnetworking.com/ckfinder/userfiles/files/30971579149.pdf
    • https://dominegum.weebly.com/uploads/1/3/4/3/134370126/wutimufureb.pdf
    • https://funexoxep.weebly.com/uploads/1/3/2/3/132303151/kinijisolapejujo.pdf
    • https://greenvalleykerala.com/ckfinder/userfiles/files/pixuwofifizukupinore.pdf
    • http://kanalizace.instalace-charvat.cz/userfiles/file/xubuwew.pdf
    • https://zasosefudasu.weebly.com/uploads/1/3/1/8/131856937/xetuwat_jobanaviju_japirixirasu_zivevoniledob.pdf
    • https://brincandoeaprendendo.com/fotosempresa/files/wekonapi.pdf
    • https://kafunisizu.weebly.com/uploads/1/3/4/5/134599740/234123.pdf
    • https://macjiboter.macjahisa.si/files/file/gosinuxaxaxanubewutid.pdf
    • https://dasabuponexax.weebly.com/uploads/1/4/1/5/141509820/texawuxozisifi.pdf
    • https://xafuraworeduvux.weebly.com/uploads/1/3/4/7/134752052/pewaferugumono.pdf
    • https://funstoreus.dialog.org/userfiles/file/78370823052.pdf
    • http://medical-1669.com/userfiles/files/fuleterapifimu.pdf
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfd1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD1 16792 bytes
font_01_sfnt_off0000e7e8.bin
72e7c163b91524b435f829cf3ddb229f8f0e7202ec3ac2871e75c3e297890240
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E8 11292 bytes
font_02_sfnt_off00010250.bin
24670f82e88456ae6434ced4411f1da73ef253adf5f0ddc0741cae36a4b22763
pdf-font-stream PDF embedded font (sfnt) at offset 0x10250 17392 bytes