Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eca4cc47cc3614b…

MALICIOUS

PDF

80.4 KB Created: 2021-09-02 20:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: a295c02cad8364576ef45e01bd449ef2 SHA-1: ad385f88633dba91dd78b96dc2808cb54c0c1d07 SHA-256: 7eca4cc47cc3614b3ddb529065f9f8a34ae46b3f9a7f494aca5d2f6bbbe1e814
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, with a significant portion pointing to websites hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to lead users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://mbcasc.net/imgs/file/96214601330.pdf In PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/dvljush46nssv18q2i8dlroprm/6034563552.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1609a80935cad0---92001672703.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/udupogujikujawi.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/rekutiwe.pdfIn PDF document text
    • https://cissud.it/uploads/ck_editor/files/lilesesazufaziwabibolat.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/03b9176a42e49232fe5f629be374f160/xesezubotexop.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160bff858769b9---58246289825.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16126e3ba213f1---68973385694.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210726165554.pdfIn PDF document text
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1611034363e780---50788145926.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a77ea118a---bokitejupa.pdfIn PDF document text
    • http://firanywiktoria.pl/uploads/editor/file/bipapimibomi.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608c4029eb891---govipo.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075fcd00ea62---14520877263.pdfIn PDF document text
    • https://gameclub.by/uploads/files/wafixaxo.pdfIn PDF document text
    • http://www.conectadoscomdeus.tv/arquivos/file/96960086461.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/dh8nvg1iu4idmurvs6bhkscm0f/17239091716.pdfIn PDF document text
    • https://www.elitelawnsolutions.co.uk/wp-content/plugins/super-forms/uploads/php/files/1cta7v3fblln7themviokjo3fi/78204882292.pdfIn PDF document text
    • http://eprdel.cz/userfiles/file/33728712381.pdfIn PDF document text
    • http://geyuping.com/geyuping/uploadfile/file/2021081004540573499.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/42672268754.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/86692618152.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=essential+elements+2000+book+1+%28flute%29+pdfPDF 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_off0000ce34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE34 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e64b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64B 11324 bytes
SHA-256: 2b00d394d3d76a600348d58d3f03c167a402e32f8d119cc18926b6939834cd27
font_02_sfnt_off000100e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E3 19416 bytes
SHA-256: 172e3e24ceb74d2d2d093896898f9c0ac6f7b0aee09a51c76d9240cefb4e0716

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