Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea93b00259de5c7e…

MALICIOUS

PDF

83.8 KB Created: 2021-09-11 23:57:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 944339bad84cc2a97821384c861e7dd5 SHA-1: 8e9056bb8295c787940cda86383a378426354159 SHA-256: ea93b00259de5c7ed210573f8ff4afb4f4728ca8b7b466f4bc9318ea592e64ba
272 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and multiple links to external PDF documents, indicating it is part of a phishing campaign. The document body heuristics indicate it attempts to lure users by requesting recovery secrets or private keys, and also mentions remote support tools. The embedded JavaScript likely facilitates the execution of malicious actions or redirection to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 10

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://birizgardenhotel.com/userfiles/file/78672511993.pdf In PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136d2d794a6d---fuwonewaxixine.pdfIn PDF document text
    • http://www.motocams.cz/ckfinder/userfiles/files/wojumupiserekurol.pdfIn PDF document text
    • https://dragonexpressml.com/userfiles/files/wezede.pdfIn PDF document text
    • https://silky.ae/images/bulk_images/files/begirijom.pdfIn PDF document text
    • https://volpatoebrum.com.br/_common/admin/scripts/ckfinder/userfiles/files/37637103608.pdfIn PDF document text
    • http://vmkmsz.hu/userfiles/file/mebodepejogajinirolevid.pdfIn PDF document text
    • http://telegid.tv/userfiles/file/34264161161.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/4f2a6c1ff49f182e8b1f05a809bbd80f/88820451267.pdfIn PDF document text
    • https://neksav.com/upload/ckfinder/files/4431160062.pdfIn PDF document text
    • http://wpklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/24103082500.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bac57dbd6b---82242070174.pdfIn PDF document text
    • http://commissioncollectionlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/24770770754.pdfIn PDF document text
    • http://strandedtattoo.info/file/linedenalaloxi.pdfIn PDF document text
    • https://corumosmanlimakina.com/js/ckfinder/userfiles/files/xamoxawamak.pdfIn PDF document text
    • http://polimak.pl/userfiles/file/budikoviwalozezugelipi.pdfIn PDF document text
    • http://chenruichem.com/upload/files/61785060513.pdfIn PDF document text
    • http://kalkulacka-hypo.cz/userfiles/files/datagovodozilokixuza.pdfIn PDF document text
    • http://cukiernia-waltar.pl/qcms/userfiles/file/gaferadefedofotubone.pdfIn PDF document text
    • https://ptogel1.com/contents/files/puvaz.pdfIn PDF document text
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd8264a252---35669030537.pdfIn PDF document text
    • http://zlzljc.com/uploadfile/file///2021090201485679.pdfIn PDF document text
    • http://hengtaixin.com/HangShun/ckfinder/userfiles/files/suwolirebafogexuvisuk.pdfIn PDF document text
    • http://oio.cn/uploadfiles/files/8995464510.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/ec0eb77da7188124efe2ffce71a9a77e/suvekukokidejifene.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=download+teamviewer+for+android+tabletPDF 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_off0000e121.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE121 10640 bytes
SHA-256: b6524904bf22aaaf190b3a3da3d3736e676cca281e5a0473089504ac4d7bab81
font_01_sfnt_off0000f979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF979 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001118b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118B 18284 bytes
SHA-256: 5e71273177dabf3995543117cf558550de7f57715840463e2f796c1a20370cdc

Open this report in the interactive analyzer, or submit your own file for analysis.