Malicious PDF — malware analysis report

Static analysis result for SHA-256 58add10b4a6b472b…

MALICIOUS

PDF

79.3 KB Created: 2021-05-26 00:21:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d9518c5caf30e1e6a0a317644e9eaf1e SHA-1: 003d30570a69159a27581139afd4fa2718d18c64 SHA-256: 58add10b4a6b472bb5c99524f64d1645758c45307424ced6d4b31ea805732b9b
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document employs a social engineering tactic by presenting a lure to install a browser extension or update, a common method for credential theft or malware delivery. The document contains numerous links to potentially compromised WordPress sites, suggesting a distribution network for malicious content. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078973ade258---13752951381.pdf In PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/8c0cd5124ff175a090cc58956f686bba/tatudogesaro.pdfIn PDF document text
    • https://bnbcostaverde.it/userfiles/file/88919268674.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/132b85cc1ca7b4076c22b40f258594f9/jolixaji.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160ad69274084c---mamogagote.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/ef306bc1063370419d690a2d74b46569/95648131658.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607113c65a7df---90957895283.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/c0939dd76db93ff100969d4daaa51eae/12261047635.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/fibevixaj.pdfIn PDF document text
    • http://alituncer.com/userfiles/file/lelikilutavoseduxexuk.pdfIn PDF document text
    • http://www.anieliasfx.com/uploads/textareas/file/vidogegesoboraxaves.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a3488eac67b---gepotigisodije.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/67407811252.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/qvdgovvgpdud0b17u6bfo40uj2/fatobewurubabepamu.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/daccfdrsts5tkr0432prlbtru0/21592949720.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160a96038a300c---vetevupabivivobobide.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/u4ddbt9rghe9i1hcchd8qmo98o/90886491053.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160ad6824c831e---42549938353.pdfIn PDF document text
    • http://askort.pl/Upload/file/xevukojaxalidederosofesud.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/13b722eca3230088e7a2dc98459a8520/24530845277.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=corel+x4+key+generator+free+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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB59 5076 bytes
SHA-256: 4d8a1e796194c1b2cf01703f4bbed2286cc128dd9857bce72fa5ec1c7fbac441
font_01_sfnt_off0000fcce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCE 10744 bytes
SHA-256: a1cfa1271b692509530b4dd977112afa1f8425faab6791e4344429310b220acc
font_02_sfnt_off00012168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12168 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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