Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb8f9c9fdd9a671…

MALICIOUS

PDF

104.8 KB Created: 2021-07-01 00:52:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 122d4104385ab55d616875cd4dc95510 SHA-1: 866cbb106ec91c541929f667b5bc75759e6183a8 SHA-256: ebb8f9c9fdd9a671dcd3e603209067d3079e2e4a684c59f11d58c95f7b484c23
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and is identified as a link farm hosted on potentially compromised or disposable domains, suggesting it's designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9888

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://allytemp.ru/uplcv?utm_term=rottweiler+beagle+mix+puppies+for+sale PDF link annotation
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/8d01d974d45fffb69ae03f472cffb151/31722823115.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/160babb52475fb---55001259414.pdfIn PDF document text
    • http://htygroup.com/upload/files/pigafibikigo.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160dce58e9dd7e---42113739503.pdfIn PDF document text
    • https://moto-trend.cz/public/files/fck/file/vamogaripanizu.pdfIn PDF document text
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/9a4a16b10ba8b81b045d7240ec5f7515/pasiwoxozuxonilobo.pdfIn PDF document text
    • https://readxyz.org/wp-content/plugins/super-forms/uploads/php/files/50ba3d6d9a6f5f3fbf181b30876673d9/76373698398.pdfIn PDF document text
    • https://brickbodysupplements.com/newerac2c/userfiles/file/15910661357.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606d476f59d9f---41229850066.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/mabefurupila.pdfIn PDF document text
    • https://bangvetthuong.com/luutru/files/29937085070.pdfIn PDF document text
    • https://musikkursus.dk/userfiles/file/wafavufirodaxuse.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087937211152---meragejatedofalowo.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/0c4fc9764a767c208167d5b7ebd5266d/sajokatil.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072ff6adbaca---44315851150.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096541bece4f---67902257169.pdfIn PDF document text
    • https://thegioidongphuc.net/ckfinder/userfiles/files/vixagaka.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098c075a5be8---mijiweveposaxux.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/sigosezamujagapibiromuw.pdfIn PDF document text
    • https://www.webhisto.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160be5e8cce9ad---bigisenapazarofegufijefep.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609336305f3ed---41655271086.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080289eaf36a---58164230396.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/b4ef1025898f783a86308cdc1593b26b/77954807098.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00012b27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12B27 18436 bytes
SHA-256: df4fa0d72e7aac90654d6d09209cd4d32055adf9bb5b74dad02f215a1cac80b7
font_00_sfnt_off00011316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11316 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000148d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148D3 19080 bytes
SHA-256: 722b75db6361c68613be0012c51a3b42d4b23acddf66c2cb13df3524506ce0d1
font_03_sfnt_off00017bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17BC5 11068 bytes
SHA-256: 47227d6ab8f13150b12543ce48d8a51f994078bfc743c13e1913a88b08e649a5

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