Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b7f5d8d053daac…

MALICIOUS

PDF

84.8 KB Created: 2021-07-26 03:16:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: d3ff323321e4cc81994628dadab0f745 SHA-1: c0b9172f506344eebfd10312129500a07e580836 SHA-256: 96b7f5d8d053daace47d1d9abc8426acd59136cfc2aedefed4734b158c466ebb
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The presence of multiple PDF link farm heuristics further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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 http://yasairamenbar.com/uploads/files/budexinuwefa.pdf In PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/c35a9caceb13c4804d255123cbd6bff9/janilivitilotenaxuse.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/030710ecbc240bf40e72ec8103513b79/tonudaxulevifemoxuk.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/cpkurfqkd0hus4ir7u3967bko6/mibiripizesukefafor.pdfIn PDF document text
    • http://ndt-tl.ru/upload/file/fewenosatomanobibogeru.pdfIn PDF document text
    • http://newabel.com/ckfinder/userfiles/files/36097142747.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/56895047651.pdfIn PDF document text
    • http://www.sospapa24.com/lib/ckfinder/imgupload/files/39726136978.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/9ce93cfab51e1f9f1d21023f68a78579/13817403415.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/d1d77b928c9e34a6f07371260c1ada01/ketazidoxar.pdfIn PDF document text
    • http://metafelix.it/userfiles/files/33332004833.pdfIn PDF document text
    • http://hhsbluebirds1967.com/clients/b/b5/b592d679e9980e62d9d56be1bfb8b6b6/File/lunasudixunorulexomel.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/0364a729ad59b35c6e49478153b95be5/7385061713.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160e0b0dd420fc---waganiz.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/ec2a9b0377d8561519375e51bb83ddd1/kotovozosokuveg.pdfIn PDF document text
    • https://mbamantra.com/ci/userfiles/files/lebogogawezopib.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ff79c3ce09---rekot.pdfIn PDF document text
    • http://hakkabrothers.com/userfiles/file///40454713187.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d0b85e23e58---7807743155.pdfIn PDF document text
    • https://piataafacerilor.ro/app/webroot/files/userfiles/files/52694035145.pdfIn PDF document text
    • https://nirmalujjwal.com/public/ckfinder/userfiles/files/kupuseleravoguku.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609c12a72d958---jizutuzasazepupikumiko.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/10f305ec3ba8c01e63b83aff910239a3/romiritexezudoze.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/16096a0b163631---lepavanedunuzegi.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f7630ea7fa---23140679713.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/9bf8s4131a2v5uukgvjgooo34r/83910396931.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=michael+jackson+we+are+the+world+all+stars+mp3+downloadPDF 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_off0000e0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CC 11252 bytes
SHA-256: 558b7a3a41d96ea6db38a5206e752fb4ca7ec7d1b02262d7d9487306d7d931bf
font_01_sfnt_off0000fb12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11324 19044 bytes
SHA-256: bd58bdc85f7ad5043a7941b31cf816d1da8b62d28e32594d1de69f0221ab9ed7

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