Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ceed8dc79eb13a…

MALICIOUS

PDF

71.1 KB Created: 2021-09-09 22:36:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 46e828919886f98303ff44393f07dd77 SHA-1: 2e8df602fb1b5147b12672de2248780aaf8117ed SHA-256: 62ceed8dc79eb13ae608134e009c5f9f196563cf5ff2ecffae2e23751afa13d2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV, and contains embedded JavaScript. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's intent is to solicit sensitive recovery phrases or private keys from the user. The presence of embedded JavaScript suggests an attempt to execute malicious code, likely to facilitate the exfiltration of this information or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://barrospizzadb.com/uploads/files/86192575988.pdf In PDF document text
    • http://thsport.dk/userfiles/file/zuwarepisokatosorad.pdfIn PDF document text
    • https://tasleemdubai.com/userfiles/files/petiwejawatenifed.pdfIn PDF document text
    • http://mawratanews.com/armedia/uploads/files/72165472167.pdfIn PDF document text
    • https://pushtypathshala.com/demo/aims/files/images/files/97696215156.pdfIn PDF document text
    • https://www.cylinder96.ru/admin/ckfinder/userfiles/files/35370565258.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613721150ff69---97377455403.pdfIn PDF document text
    • http://mgbig.com/upload_fck/file/2021-9-6/20210906100821704153.pdfIn PDF document text
    • https://petrovsky14.ru/docs/files/ditawolosevipuzeserov.pdfIn PDF document text
    • http://angelofthewinds.org/ckfinder/userfiles/files/ginibejufojomux.pdfIn PDF document text
    • https://dlt-nkp.com/fileupload/file/67986178823.pdfIn PDF document text
    • http://susasoft.com/upload/userfiles/files/sososazogebubanokulun.pdfIn PDF document text
    • https://www.l-games.jp/js/ckfinder/userfiles/files/11423370226.pdfIn PDF document text
    • http://www.neoneofitou.com/ckfinder/userfiles/files/wipadi.pdfIn PDF document text
    • http://skpizzasubs.com/uploads/files/51725538817.pdfIn PDF document text
    • https://floresdeserrezuela.com/aym_image/files/fovora.pdfIn PDF document text
    • http://telek-trans.hu/editor_up/57863419427.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/23401737671.pdfIn PDF document text
    • https://www.liftechforklifts.com.au/application/third_party/ckfinder/userfiles/files/xibapajumo.pdfIn PDF document text
    • http://mariautonoleggiomarsala.it/userfiles/files/gipefafux.pdfIn PDF document text
    • https://myparrotfood.com/user_files/files/purelokisazab.pdfIn PDF document text
    • http://gesundezellen.com/neu/userfiles/file/jopepivekunepeloruxez.pdfIn PDF document text
    • https://www.karelo.com/uploads/File/82174657792.pdfIn PDF document text
    • https://onlinendttraining.com/files/lifizemigarimulalafaw.pdfIn PDF document text
    • http://kondicionery-fryazino.ru/upload_picture/file/3027657477.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=sql+apk+for+androidPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF6 15808 bytes
SHA-256: 44a4af34e0e91f8347153dee9f31febfdc9222d998096dcd83e243121d561129
font_02_sfnt_off0000f713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF713 10408 bytes
SHA-256: 1a2dd183bcb141d7fca17cb8888a70dbb60326f1fb9f8fd68cca2cedfb3d666b