Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17c2b2f4809e59a…

MALICIOUS

PDF

72.1 KB Created: 2021-09-01 12:11:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 17ff2e38007b44d4733a2e85c09adee4 SHA-1: 3b54f59192bf67370ba2e750ef5b1a347c94a2c3 SHA-256: c17c2b2f4809e59aedf3619afb11440f31e5d85c667b628857e474b288e7e1d4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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.
  • 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://pistant.ru/uplcv?utm_term=evaluating+one+sided+limits PDF link annotation
    • http://dryoucosmeceutical.com/userfiles/files/81009015599.pdfIn PDF document text
    • https://watertorens.nl/userfiles/file/50031191851.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/fuvutixigemabo.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/1af31479004ae09a3c979bb0aaa0fd14/junukebewivubirim.pdfIn PDF document text
    • https://sahyadrisevasanstha.in/userfiles/file/43982057892.pdfIn PDF document text
    • http://bpsstudio.hu/uploads/zorogivajofegudekebamuvaw.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/47899552121.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c28107d5b66---70916398822.pdfIn PDF document text
    • https://pianoinprimopianofestival.com/uploads/file/navimavi.pdfIn PDF document text
    • http://93564497.com/userfiles/bifatetokanubodur.pdfIn PDF document text
    • http://jyotiacademicpress.org/uploads/file/71691391146.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/383c7608de0878e1dc10421957093704/fugeregewababajivixuxetuv.pdfIn PDF document text
    • http://happinessgown.com/upload/users/files/doxubatedoxukutipedobovik.pdfIn PDF document text
    • https://vinatech.com/userfiles/file/suwididaxepijozuxa.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160704ee94a766---83513044097.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/5cf6de2a290558af85866568ac331477/64696930743.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/61987988532.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/zikorotamepidotukolevil.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/65853514173.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/bqqmlqto9icq9ed9bn26fjj0mp/wofinalixopabumezorego.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/c6095ea075e2d69d65623e7191c684df/92665357977.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c53aeeb38---xozobafevejujabefapesole.pdfIn PDF document text
    • http://janjoling.com/public/ckfinder/userfiles/files/bajemaxexiseluzu.pdfIn PDF document text
    • http://therealmccoyfamilyreunion.com/clients/f/f9/f9ea119420dddc0cc5ac7622830b9f68/File/368881731.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_off0000bb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB32 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD349 10640 bytes
SHA-256: 739f066ea12d1cfd5038e787a241a217d16c955b698c7f42f69359035d425474
font_02_sfnt_off0000eb69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB69 14732 bytes
SHA-256: 3e53299d93debeed1328777d2fe06f1c2a34f0cfa7aaf26eac17b0e1e942a70d

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