Malicious PDF — malware analysis report

Static analysis result for SHA-256 de0f47767d4326e6…

MALICIOUS

PDF

80.6 KB Created: 2021-09-19 15:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 9f89fb3d65f6b4788ed28d3ce790280d SHA-1: 0b1ea398362bbcd637925f5808ce9d7886771628 SHA-256: de0f47767d4326e64eae0a0054dd72590867785089025bad93802fa967d79ebc
196 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample is a PDF document flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document instructs the user to copy and paste content into a shell, a common technique for executing malicious commands. Several external URLs are present, some hosted on compromised WordPress sites, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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
  • 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.
  • 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://crewmak.ru/uplcv?utm_term=share+phone+screen+with+pc PDF link annotation
    • https://fetogram.ir/images/upload/files/felekim.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/16138079251b9b---wubabatokokigoko.pdfIn PDF document text
    • https://cnn-logistics.com/asset/files/40141242556.pdfIn PDF document text
    • http://sunil.kr/uploadfile/fckeditor/file/notafi.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161310dff73593---24082264038.pdfIn PDF document text
    • http://busto-wl.gattinonimondodivacanze.it/themes/userfiles/files/52684406952.pdfIn PDF document text
    • http://alacarte-husum.de/userfiles/file/65487153028.pdfIn PDF document text
    • http://kaies.net/upfiles/2109110352065668142o05pz.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/30982c9c9dbb71eadb3f7dffecb4c61c/41481388312.pdfIn PDF document text
    • http://entone.es/wp-content/plugins/super-forms/uploads/php/files/399fe79d78a3f7a491d2537ddf7edabb/25684645098.pdfIn PDF document text
    • http://numismatika-nbkpdy.cz/userfiles/file/8295618026.pdfIn PDF document text
    • https://serviceservice.eu/userfiles/file/44228786893.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/6pfh29eahgvisf2u3v72c46gb9/78851049857.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/4a92c0eeb326fd591d11a7b33717b443/bufutuji.pdfIn PDF document text
    • http://ipceurope.be/assets/file/55978866109.pdfIn PDF document text
    • https://dauglita.lt/components/com_mijoshop/opencart/image/data/files/85865301708.pdfIn PDF document text
    • http://studiomilano.eu/userfiles/files/nenosotigukelovujomemuj.pdfIn PDF document text
    • http://ark-mr.com/data/home/qxu2063190031/htdocs/uploadfile/files/410817784.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161362a2e74a71---nitabajiziliwunasifabizem.pdfIn PDF document text
    • https://pasifikendustriyel.com/userfiles/file/88653422806.pdfIn PDF document text
    • http://miydz.com/mingyi/images/userfiles/file/93527473600.pdfIn PDF document text
    • https://webrobogo.hu/kepek/15602874690.pdfIn PDF document text
    • https://thisissati.com/userfiles/files/72809917856.pdfIn PDF document text
    • http://elfobchod.cz/foto/Image/file/masupegorutoperipifij.pdfIn PDF document text
    • https://webvitamin.vn/app/webroot/uploads/files/sotolobilet.pdfIn PDF document text
    • 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_off0000d6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B3 17732 bytes
SHA-256: ca1c158fc573edf3417ad6fa8491a01dc7505e19419c1f20140c1fe7b937a656
font_01_sfnt_off000104e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E6 10584 bytes
SHA-256: 7f45f537a32f0ee80c80a9ee948dccfa11e223f6ab607014e168fed5f9f9dc9f
font_02_sfnt_off00011d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D14 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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