Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed789a9833a63d3…

MALICIOUS

PDF

83.4 KB Created: 2021-09-20 10:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: fa326a39d435be9e799ec9bfebed9b59 SHA-1: b3c85f7bd73c5d294d48c022264d294e09c6f426 SHA-256: 0ed789a9833a63d3240194248d73af0e5c03abc9184c16dec80d7470c9e5df71
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. The presence of embedded JavaScript and a 'Clipboard command execution lure' heuristic indicates the document likely attempts to trick the user into running malicious commands, possibly to download and execute a second-stage payload. The numerous external links, some pointing to compromised CMS uploads and disposable hosting, further support a malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.
  • 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://mimpishio2bet.net/contents/files/forerodejakawe.pdf In PDF document text
    • http://coffee33.ru/archive/file/39721520410.pdfIn PDF document text
    • http://zenkatsu.dk/files/30403464252.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/tujopejizoditekekevanoliz.pdfIn PDF document text
    • http://weingut-suppan.at/files/4103620799.pdfIn PDF document text
    • http://hatowo.com/app/webroot/uploads/files/25770701409.pdfIn PDF document text
    • http://enjoyisagenix.com/ckfinder/userfiles/files/20485205825.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/dc77b72ca936fd809ce3acba32c8730e/31283014021.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614227c68545d---gutaduzemozivud.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/f5037021d4ae99104f2d46b165ece992/405400427.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/16142ffa2c5357---jazokuwenidisawelelikak.pdfIn PDF document text
    • https://betenenergy.com/sites/default/files/file/12584838018.pdfIn PDF document text
    • http://sky1981.com/asset/uploads/files/32931858560.pdfIn PDF document text
    • http://bebaldebaran.eu/userfiles/files/13376606752.pdfIn PDF document text
    • http://stickers-moins-cher.com/userfiles/stickers-moins-cher.com/file/tulepenafowapuloreb.pdfIn PDF document text
    • http://biosystech.com/pdsFck/file/71112782524.pdfIn PDF document text
    • https://pamukoglu.com/userfiles/file/nonetope.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/pezaterafuzomebuwe.pdfIn PDF document text
    • https://mlmrockstars.com/ckfinder/userfiles/files/dazat.pdfIn PDF document text
    • https://gilbertems.com/videos/file/puwekojaba.pdfIn PDF document text
    • https://beaszemin.com/files/zagatex.pdfIn PDF document text
    • http://santiagoporter.com/js/ckfinder/core/connector/php/files/purozo.pdfIn PDF document text
    • https://electroagro.es/pub/files/1883673604.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=galaxy+s3+watch+battery+drainPDF 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_off0000e1c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f9d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D8 11000 bytes
SHA-256: ff3b97fa32935385e71c515723c843c5917444891f248103af8316afe84ff673
font_02_sfnt_off0001137a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1137A 17192 bytes
SHA-256: 17a03671b0474f2bd213830fe805d1c10df5616706bb840cc797bd3792eccec4

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