Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb92a0a259cf9c7…

MALICIOUS

PDF

78.5 KB Created: 2021-09-02 18:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 5f3ff9f855df31dd3841be68496d9838 SHA-1: f27e8fbb777f40298288b866716f689130664c6d SHA-256: ebb92a0a259cf9c738483ac38a19bf0a57416aca9a0bd3106b8df79ac6621788
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of multiple links pointing to compromised CMS upload storage and disposable hosting, combined with a 'download button' lure, suggests a phishing or malware distribution scheme. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious workflow designed to trick users into downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://artasedanasingaraja.com/uploadfck/file/loxogexaturedibizesif.pdf In PDF document text
    • http://aaz.sk/editor_uploads/files/70320855991.pdfIn PDF document text
    • https://perfecthospitals.com/ckfinder/userfiles/files/58107355723.pdfIn PDF document text
    • http://duonglaohanoi.com/userfiles/file/jevix.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/davuxavasufapeda.pdfIn PDF document text
    • http://futsalcb.cz/picture/vtextu/file/50903701555.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/9ea14bcc62549bab28c4b02f3a9bc9b7/xiwor.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/14015418260c42c0b0619e.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160817ea69bc9c---lufomirotimekezarogatub.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/lelajof.pdfIn PDF document text
    • https://xn--22ck6bdp5cach0mc23a.com/ckfinder/userfiles/files/36601612658.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/516d4c14ecf7e2fad2846d3ac3e6299f/tepiser.pdfIn PDF document text
    • http://chrisdepanneservices.fr/Sites/cds/files/78580494320.pdfIn PDF document text
    • http://agro-pasz.pl/ckfinder/userfiles/files/voneduzerunifomexeb.pdfIn PDF document text
    • https://sleepthai.com/piceditor/file/lejegimefa.pdfIn PDF document text
    • https://aiaciran.org/cache/fck_files/file/zopurunigonarurewotofij.pdfIn PDF document text
    • http://ecogestval.com/userfiles/file/gipaxadelag.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160758885a4c1d---72262075019.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/13f0243e4a23da5c5640402eafdbeca6/vavetonaliv.pdfIn PDF document text
    • https://golf-tout-terrain.com/publish/page/file/lirirekizunuzesegajuko.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee345e8129e---sowetamefixuzig.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/20c20aab40118db36f72bfc9efaaf781/6210872835.pdfIn PDF document text
    • http://magooferta.pl/uploads/fck/file/39108410984.pdfIn PDF document text
    • http://dirpub.org/editor/ckfinder/userfiles/files/62085441855.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=plural+nouns+worksheet+for+grade+5PDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEAB 17288 bytes
SHA-256: e9a231bcff22ea50f5649bea0b2f62b3dd5d16a90f5d65662b881cf2d0959880
font_01_sfnt_off0000fb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB56 10952 bytes
SHA-256: 8257c008b23adf48cff33164e7e9d9733b930e410bdbdb5262b465862bffa5c9
font_02_sfnt_off000114aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114AA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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