Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eebebf73ab298f9…

MALICIOUS

PDF

123.6 KB Created: 2021-07-14 01:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 23f4b392bec5b02696616f0c268ee66b SHA-1: 90bb6c198e896232c4584d02f1c8189356e2db4c SHA-256: 9eebebf73ab298f90a898eee85d73772b2acc11ccb5949b7d2de0ecbf01a7f4d
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised CMS uploads and disposable hosting, likely to obscure the ultimate destination and evade detection. The presence of a download button lure further supports a malicious intent to trick users into clicking through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9657

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://broadcasthub.com/ci/userfiles/files/95890054986.pdf In PDF document text
    • http://dunajecbiala.pl/upload/File/95791359945.pdfIn PDF document text
    • http://goodtraefarm.com/ckupload/files/zosujaluba.pdfIn PDF document text
    • https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/rv9a4t0krbmv1sd5ehq0nh1ehm/dusoveze.pdfIn PDF document text
    • https://arhometutor.com/userfiles/file/98461799555.pdfIn PDF document text
    • http://media-production.net/admin/ckfinder/userfiles/files/natiwakewugelired.pdfIn PDF document text
    • https://synodradomski.pl/userfiles/file/sidajesisogedosab.pdfIn PDF document text
    • https://0900107678.com/upload/file/zinisizunanakikokesolo.pdfIn PDF document text
    • https://moniimpex.com/wp-content/plugins/formcraft/file-upload/server/content/files/160978ea371c58---32918947609.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/23ccf321946d7da5df732e03519ece37/disimep.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608033c91ee03---39157187866.pdfIn PDF document text
    • http://kalikraft.com/images/file/gufupe.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607062bf4bdf5---11437261683.pdfIn PDF document text
    • https://butchercurnow.com/img/shop//contents/9868967785.pdfIn PDF document text
    • http://caphegiabao.com/upload/fck/file/lupuxiravadimab.pdfIn PDF document text
    • https://bacninhonline.com/webroot/img/files/70210399040.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021051419301240.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078746ecd33c---sogeboxuwej.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/dp649gbk4klgito07kti23mm53/bajibopeluviviribimaratuf.pdfIn PDF document text
    • http://matsonconstruction.net/userfiles/file/forodefiravibikujiwad.pdfIn PDF document text
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/negevovarok.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/6d60a33b3d4d27a4cc95c0eb1bce697d/76718079112.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/ha5jts706mffgg36tkbrthng65/taperakurukenumobonasosez.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1609236769ad03---vozotolekuzexusexewom.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/4018dc06ba24e927f9daf1dac5e54025/wavobosave.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=meaning+of+intensity+in+englishPDF 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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00012277.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12277 25012 bytes
SHA-256: 4f6e3b759e20bf256667ba35964126e9bb4d0e2e0902ffbbd8719a2a669966f1
font_01_sfnt_off0001504a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1504A 10500 bytes
SHA-256: 8639d8f5a8270d9838229dd9bafb46142bcb1287a3114b65242195659ead3972
font_02_sfnt_off00016822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16822 32192 bytes
SHA-256: b425a6468d023a953778088fbb3de52c836ae9cbed1aa93ba08676f87c6200f2
font_03_sfnt_off0001b031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B031 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_04_sfnt_off0001c83e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C83E 6984 bytes
SHA-256: 9088d295e7cec706bac93d362d2ed0eaba24621fe4bd8da8bdeeb0f96f1c9904

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