Malicious PDF — malware analysis report

Static analysis result for SHA-256 47be6b4bbb107747…

MALICIOUS

PDF

108.8 KB Created: 2021-07-05 19:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: d6ad591201680a399c172eb73c938a77 SHA-1: 3ccfbb069194f2796581a54ed194a05c6162fd55 SHA-256: 47be6b4bbb107747b3c67b538850ff78e0d61ac98fc9265903cd1d0d700418b6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, indicative of a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The presence of multiple link farms and the use of compromised domains indicate a sophisticated attempt to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/6b696a2c23787fb16e6e04cc8689b880/26363150908.pdf In PDF document text
    • https://beauti-full.ru/uploads/files/14432420609.pdfIn PDF document text
    • https://nasroglobal.com/userfiles/file/tikenanaj.pdfIn PDF document text
    • http://reunionclass.com/clients/7469/File/vijib.pdfIn PDF document text
    • https://viettincapital.vn/upload/files/16001061539.pdfIn PDF document text
    • http://euredit-editions.com/userfiles/file/tavuxegomagu.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160838b6525e51---xufifipimake.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a31df6923ce---67936753035.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/2h4sjn9rdjbgsviiauouqatjh2/47932258011.pdfIn PDF document text
    • http://e2ingenieros.com/ckfinder/userfiles/files/955636385.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/jh05gf6jgof9gn4jsmnggpj754/29347472937.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078292d6ace8---waseriwugupuwaverasifev.pdfIn PDF document text
    • http://taskentcompany.com/userfiles/file/2579019990.pdfIn PDF document text
    • http://ewhamd.net/upFiles/ckeditor/files/21808128698.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/28643175966.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098528165820---79065460817.pdfIn PDF document text
    • http://avandcie-automation.fr/ckfinder/userfiles/files/57745340427.pdfIn PDF document text
    • http://muzeumostrowiec.pl/obrazy/file/tidatibigizuvijoto.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160768a94ee1de---71790533721.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba874023ea9---zapuma.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/22895277673.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/m9i7lolgtfl7nulupugjhhtof1/24989564731.pdfIn PDF document text
    • http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/08a2c8d55725015ce040d8ad9aeb1315/rulerame.pdfIn PDF document text
    • http://nowator-zpu.pl/userfiles/file/95239152399.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=rote+memory+learningPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000147a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00015fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FB9 17752 bytes
SHA-256: be5d8cc6b48c92d09c1c3bd15fa686a771dfa0d19685da222a8a4323747e563b
font_02_sfnt_off00018e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18E50 10444 bytes
SHA-256: dfd585bab730441a6b6c606e507b2a633d97dfe878ad49688babedadd13f628d