Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f32139e2eae5df…

MALICIOUS

PDF

87.8 KB Created: 2021-07-30 16:06:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: cb24bab87261029ff473c35f58c4c1b7 SHA-1: 8cf4479cd857d89b27371882a4359f951875dbff SHA-256: 58f32139e2eae5dfe81ccfdf841318161819d85b9a2268eab07dab8037b4de8f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan payload. The document contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of invoice or payment language further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://chataphan.com/file_media/file_image/file/67183138056.pdf In PDF document text
    • http://app8itebarandgrill.com/admin/images/file/73928301710.pdfIn PDF document text
    • http://currycornersugarland.com/admin/images/file/gerozusuzizage.pdfIn PDF document text
    • https://radmangroup-ye.com/rgfiles/file/53485550656.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608deacfba758---75735500876.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/uh9jgr83qr7034n18j83a57lj8/sobuximoxaduzewebizonezat.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a4f5cae3e2e---94686554432.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/1a91ek2kff312khdg2uavlqfph/49500205318.pdfIn PDF document text
    • https://darkoyunpin.com/calisma2/files/uploads/jitetif.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/228bf7e35a4603764a76f5829eeef88c/tapobejofenexig.pdfIn PDF document text
    • http://gemwishrs.com/ckfinder/stones/files/kulom.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/c540f9b09032c323fb967fdbf7be4a65/bemojaba.pdfIn PDF document text
    • http://agiusfuneraldirectors.com/files/file/51918251239.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c76ce4563952c5b0da8a7a2c57d36c8d/49749797199.pdfIn PDF document text
    • http://aj-logistics.com/stock/userfiles/file/ronuta.pdfIn PDF document text
    • https://irantruck.ir/data/file/zezezowobimadosepulejarib.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/t72v7mb2q6oiai2n23i1306af3bfv7pb/29626376533.pdfIn PDF document text
    • https://tekartltd.com/upload/files/49312465639.pdfIn PDF document text
    • http://studioscoponi.eu/userfiles/files/91195497395.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4334fc2fc9---wefumiwus.pdfIn PDF document text
    • http://fitviewer.biz/files/file/sovatutusuzuselenap.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/5ea81cd4cf2dcebf7b033fe01da8c4dd/37098053551.pdfIn PDF document text
    • http://reflita.lt/uploads/files/21643650574.pdfIn PDF document text
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080ade346ff7---bewubotogijapa.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c776447ee48---jigifunivovugogiguviwuz.pdfIn PDF document text
    • http://www.buildingmalawi.com/images/uploaded/documents/danunelekotibozesatalip.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=free+printable+monthly+bill+trackerPDF 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_off0000f2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EA 17192 bytes
SHA-256: ce248bc7ed9161ae48bc291c6eb53b179c25fdcaf6ceb0b611b0ee827bf73b37
font_01_sfnt_off00011fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD1 10796 bytes
SHA-256: ac9fa375ae48a7d98fa39762d3db974d611d04db5ff1548d9fb67ce7f82e866a
font_02_sfnt_off0001383e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1383E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1