Malicious PDF — malware analysis report

Static analysis result for SHA-256 56546218de48bb97…

MALICIOUS

PDF

83.7 KB Created: 2021-06-26 13:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6e17429618cf7369d7e8a547ccf95a27 SHA-1: 041939e3788de3ed9f9fa4317e5d0d4dff562657 SHA-256: 56546218de48bb9703d589955ebecae553ee58edcdb63cac7c75c3c5146cd647
196 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous links to external sites, many of which appear to be compromised WordPress uploads or disposable hosting, suggesting a link farm or phishing lure. The critical heuristic 'SE_CLIPBOARD_COMMAND_LURE' indicates the document likely instructs the user to copy and paste content into a command-line interface, a common technique to trick users into executing malicious commands, potentially to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://nomylo.ru/uplcv?utm_term=how+to+drag+and+drop+multiple+files+on+mac PDF link annotation
    • http://studiogallerani.it/userfiles/files/59451597149.pdfIn PDF document text
    • https://tucarrorentacar.co/ckfinder/userfiles/files/31608755552.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad0d2d1bf3---89916391313.pdfIn PDF document text
    • http://mobilephleb.com/clients/2/2d/2d2188d13063160162e6e2bbcdac547d/File/bupudukafiripoliwonov.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607815699dc44---semano.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16073afa7b8285---86168254844.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/fatasi.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/d2cesc4kpjui3tqnugf4thr8k2/nijemigur.pdfIn PDF document text
    • http://unicorn-furnitures.com/d/files/setaxe.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/5280d77c888c3a7d10a8da6080c5e497/67970322569.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/f4ef6babafa57c31be07065187aa61a3/luleba.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/158ddd6e32a82aa31860333a4074d09f/99094943933.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/bifusolalenufowenan.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/ffd823b385d6e806358608eed489c830/xezovewadotafolutejuzan.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/fimati.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c6442e5daad---naneponanuduv.pdfIn PDF document text
    • https://indolabtek.com/Uploads/userfiles/files/34595656375.pdfIn PDF document text
    • http://moreit.ch/productinfo/file/kobuxujesupalirovunemugu.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/e76c04ef35df8bdf01ecf7acef980f9c/pajigobenurupuvinu.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c8f6d373432---nakubu.pdfIn PDF document text
    • http://guerrazzi.info/userfiles/files/54726354494.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/fdcdeb4ab7d632e659d5f1d6d7e6e606/2912714254.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a324d497707---92326710248.pdfIn PDF document text
    • https://yesilkoyluleriz.biz/resimler/files/pipivoruz.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_off0000e3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B8 11140 bytes
SHA-256: 19e2a57e234109cf477e55bab0cad5eb5f549b9cf8d97099b48a9d6b3ec7d8f1
font_01_sfnt_off0000fd8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000115a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A0 16800 bytes
SHA-256: bf01a0e7a3be834dbbbf21b0dd9850c07e7439b7a86a967cdadab05439905d52

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