Malicious PDF — malware analysis report

Static analysis result for SHA-256 940008f6a0759721…

MALICIOUS

PDF

82.1 KB Created: 2021-09-08 11:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: aebd69f4fd5fee08001e6b3d3227d60b SHA-1: 667200bac20fc303a4cc6ab56d47ece40d2f356e SHA-256: 940008f6a0759721e8b7e55b1af451bcb25123c40898ef29f8de726abb026a1b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to various domains, including compromised WordPress sites and disposable hosting, under the guise of a 'Jio mobile PDF app download'. The presence of multiple external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://drafthe.ru/uplcv?utm_term=jio+mobile+pdf+app+download PDF link annotation
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/mf5oeplhiv9tniqd38bv847nah/98565501672.pdfIn PDF document text
    • http://thumpamonpally.com/userfiles/file/82275289074.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/9fvc28h8g8s3caj5m017dvop32/16962824065.pdfIn PDF document text
    • https://kaowei.tw/image/files/20210705_021549.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/lt4205uts40q44ufnuf3nbof01/37506633266.pdfIn PDF document text
    • https://melz-feu.ru/upload/fexapatigovasanibibote.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b60d3fa67c8---32099217005.pdfIn PDF document text
    • http://volareinmongolfiera.it/userfiles/files/37401539502.pdfIn PDF document text
    • http://sziszolg.hu/editor_up/jikimi.pdfIn PDF document text
    • http://fotofolliasanlazzaro.it/userfiles/files/rivarugelunaxaxopimupaken.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609c2b4b1973b---12450484456.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be7359626c7---xixunasajarifibewufoxi.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/990d08d3e2a7d77a68e5bb6baffc7b45/89750662311.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a1fca2466---forevowepegijewuba.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/9dc764eed18aef863199d3ffcfbb3ea2/balexiwa.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210627122942330.pdfIn PDF document text
    • https://bellcera.60km.com/upload/files/vofakozalanutuwi.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/ff47a48b3292ad6a677d12f1c48f7e0c/toxuk.pdfIn PDF document text
    • https://mttrasportisrl.it/dati/upload/file/vironutanapixanaduvo.pdfIn PDF document text
    • http://speaklifeiamgreatness.com/files/files/simimununosajan.pdfIn PDF document text
    • http://thebankcardservices.com/uploads/files/kadufinijuvoraxinobejo.pdfIn PDF document text
    • https://monographie.com/ckfinder/userfiles/files/59172306428.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b7a8bdeac7---dubegodafez.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD17 18040 bytes
SHA-256: ca36959d59b82fdabf38f28995555f7578ea7e2042d399a5fe7ee2ba42f4d334
font_01_sfnt_off00010b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B42 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12359 10508 bytes
SHA-256: 545506562f9bc51ca87ec6da527bacee5c78bdd1bccc40101826a87b889ef2df

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