Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d180e72680f7ec4…

MALICIOUS

PDF

84.4 KB Created: 2021-06-30 22:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: b47b871c0d1035df266cbd9ff24dc839 SHA-1: 4ea4bb8bd979c37b7cc04da16b67b0ac797e9d7c SHA-256: 7d180e72680f7ec4282db065db32bacc0d83f1fbfdc8782379b1450f75c0fae5
196 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier indicating maliciousness. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document instructs the user to copy and paste content into a command-line context, a common tactic for executing malicious code. The numerous embedded URLs, many pointing to compromised WordPress sites, suggest a phishing or credential harvesting attempt, or a distribution point for further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://catamma.ru/uplcv?utm_term=take+photo+with+macbook+pro PDF link annotation
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/9fa8969d64147897cd1e2694dd8b3bc0/12342379556.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609fcc780838b---gezekamudutamejo.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/4b07633fd96264ea0ba1683b6668ef92/79545438449.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/jdgl9m6gvteeo0ikh2gh85nbt9/84231671551.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/02865220722a0332ae226486b7f0fcaf/lurudakibamebowetuwajaxum.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/60047de1e6a6f6d8623d8f70c089c316/mixejoluwujor.pdfIn PDF document text
    • http://www.odnpoznan.pl/fotki/file/file/zemelobopobigid.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607f266258e30---worukosirosugewefa.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/18fa9c9327af8db5e2ec99d93d48dcb5/vujumutigirenorudoxiwalof.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/hhm088226bg8obji67bug9u90a/gujatatavaneraxukozipobix.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bde353149e6---podij.pdfIn PDF document text
    • http://prattsofdouds.com/clients/d/d8/d85aab9f4bcbae69c8358f7a9990a0b1/File/rafejoj.pdfIn PDF document text
    • http://orhs86reunion.com/clients/6/67/6744625166a0df26c7abb40948833271/File/82994105034.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/21909629740.pdfIn PDF document text
    • https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/430l2fa39hmfffupvv3rdsrlo6/fegotupoganutaxufilifane.pdfIn PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607367c3e2bca---65584520425.pdfIn PDF document text
    • https://appchecar.com/ckfinder/userfiles/files/morojitu.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086d39f77320---13861386054.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/0fccf54b2dea8c9414a274cd5fda61b6/91297429347.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/60945336853.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d55073a18d2---39537135336.pdfIn PDF document text
    • http://www.allatpatikapecs.hu/images/file/80351127676.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a88c4c8927a---pewulaxuligexakifonuna.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a81da2942b0---85584779584.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_off0000e89e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89E 16672 bytes
SHA-256: 2ddd6e7f43183e273c6c91305895a647f55b437e78affd5e5d7ff3fed5b3bd63
font_01_sfnt_off0001140f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1140F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012c26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C26 10604 bytes
SHA-256: 25470f65ee8a01635ea6cfe888197876d0a6cc51b23daa1ef44122620ff9b45c

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