Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a62065d73bb4d4f…

MALICIOUS

PDF

76.0 KB Created: 2021-07-26 10:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: fb4b589ca1a2438247ec4330f8f3274a SHA-1: f681f29d0164e4168a08781edc00fda9e523eb92 SHA-256: 5a62065d73bb4d4fdb65fb8a42458532401f71260b9e5b3382bf82870bedde73
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads or are part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the structure suggests it's designed to lure users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://aduanaldelvalle.com/userfiles/file/11042046901.pdf In PDF document text
    • http://lamekatus.ee/uploads/ckeditor/files/ledesexazezokibefasup.pdfIn PDF document text
    • http://abwcolley.com/uploads/files/92597663421.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c250c14c16d---nuwabotomef.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/88efdf53ae31a3824aa2f2aea7731216/saforulevuzevonamepajesi.pdfIn PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/86f018c421811aecdba0918bf00eb013/bivezumejolufame.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/43140369754.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7c8940f36---43345341879.pdfIn PDF document text
    • http://sakem.org/userfiles/files/59307816403.pdfIn PDF document text
    • https://mimpishio1bet.com/contents//files/zerugabosapomivevexi.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/6689b712782610476df8c4ff61b2c9e2/13015485550.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/81963716871.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609457cce1cde---mamidetul.pdfIn PDF document text
    • http://burattinojatek.hu/userfiles/file/xojanezuf.pdfIn PDF document text
    • http://przedszkolenisko.pl/userfiles/file/kasux.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/naravowetakidojew.pdfIn PDF document text
    • http://sashtraayurveda.com/ckfinder/userfiles/files/wixatudumilufotu.pdfIn PDF document text
    • https://colegiumaniucarei.ro/ckfinder/userfiles/files/86223324158.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e295e7735---48796724972.pdfIn PDF document text
    • https://faceless.me/userfiles/files/5969638846.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f502a3c2381---51892508689.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/njm8dr87t2bl6mlguptl217gvh/7733188757.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=tekken+6+ppsspp+cheats+download+pcPDF 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_off0000c439.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC439 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dc4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4B 16672 bytes
SHA-256: 319174f9ff93f361bc71b688f90e5037aea526e999595278eb0651cc66a208b6
font_02_sfnt_off000107f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107F9 10728 bytes
SHA-256: 66a90e0dd66d2fea546d706859978d9e7fa5638feb4db0d479f838a26c0c25ab

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