Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe9ec0850a02e562…

MALICIOUS

PDF

79.5 KB Created: 2021-09-20 22:46:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 5dcfd14ac9e41e9179b091592c33a8e0 SHA-1: d17d9ca760e624b1a4c1e8ed52bb70985b65d863 SHA-256: fe9ec0850a02e5629ce0d31f702b03bf7378ea38e28a8b9114de24e7c1c9381e
196 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious, indicating it likely contains an exploit. The presence of a 'Clipboard command execution lure' heuristic suggests the document instructs the user to copy and paste content into a shell, a common technique to download and execute secondary payloads. Numerous external URLs were extracted, many pointing to compromised CMS uploads or disposable hosting, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

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://garglob.ru/uplcv?utm_term=root+sony+xz+premium PDF link annotation
    • http://katela.net/userData/board/file/4662508165.pdfIn PDF document text
    • http://izeninfo.net/admin/upload/files/titogulizukulituzomo.pdfIn PDF document text
    • http://www.dogwoodagility.nl/ckfinder/userfiles/files/63433420331.pdfIn PDF document text
    • http://hiroi-es.info/yamituki-n/uploads/files/23292509391.pdfIn PDF document text
    • https://worldmedglobal.com/userfiles/files/zomoboxexenefurid.pdfIn PDF document text
    • https://santa.sg/images/users/00000000/files/80529688326.pdfIn PDF document text
    • http://franzoesischebulldoggen.eu/userfiles/file/18488907562.pdfIn PDF document text
    • http://dcbestwings.com/uploads/files/lanukuv.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/4f843cd2cccdaad412e7b595334ca105/nugupuluvow.pdfIn PDF document text
    • http://inteko-tula.ru/f/file/5680157311.pdfIn PDF document text
    • http://nobody-films.com/bpms/includes/fckeditor_uploads/userfiles/file/juradufofabove.pdfIn PDF document text
    • http://thietbimaugiao.vn/Images_upload/files/64745236158.pdfIn PDF document text
    • http://hoteldanang.com/uploads/images/files/77304746808.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/16143e4a7b14ae---sizexususal.pdfIn PDF document text
    • https://krusomying.com/data/file/97280779133.pdfIn PDF document text
    • http://sungsam.net/userData/board/file/legalozo.pdfIn PDF document text
    • http://homesunshinepharma.com/upload/files/batala.pdfIn PDF document text
    • http://betonkeritesek.eu/Content/files/maxuvekuxod.pdfIn PDF document text
    • https://ontogepszerviz.hu/editor_up/62909137838.pdfIn PDF document text
    • https://cissud.com/uploads/ck_editor/files/57087087768.pdfIn PDF document text
    • http://sireny.net/share/files/tixukakejemezevifeg.pdfIn PDF document text
    • https://careerroots.net/ckfinder/userfiles/files/54369252183.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613380eb9b59f---48249814409.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/matuseniponobesegudalota.pdfIn PDF document text
    • https://volgogradexpo.ru/ckfinder/userfiles/files/91847657371.pdfIn PDF document text
    • https://xyoaa.org/sites/default/files/files/sigiranejevefadixivom.pdfIn PDF document text
    • https://www.singaporemedicalclinic.com/ckfinder/userfiles/files/pebizizimezovijutimuxozif.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_off0000cfd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD8 18400 bytes
SHA-256: aa0e4489b0e920b14101ea59f3db945cd26d7b3538e929d394be67c7e8e19247
font_01_sfnt_off0000ffd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD9 10628 bytes
SHA-256: 022c9931516554af125e7f82787d58214ad32f4052a1e7d573a3343945e80fc0
font_02_sfnt_off00011847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11847 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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