Malicious PDF — malware analysis report

Static analysis result for SHA-256 0793124e35a4e08b…

MALICIOUS

PDF

113.8 KB Created: 2021-06-13 17:47:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 0834b8b5ed2d3f0a3a6f1b8661a85d6d SHA-1: 43da2a310cf9aee15fbaa1ac9cb139c14eb186ff SHA-256: 0793124e35a4e08b97be6171870a7c712b5260770f83f682c4e64cd662bd1bb4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to compromised WordPress sites, suggesting it is part of a link farm designed to distribute malicious content or redirect users to phishing pages. The presence of a URL with a 'chandni chowk to china full movie download' term indicates a lure for potentially pirated content, a common tactic for malware distribution. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://laborke.ru/uplcv?utm_term=chandni+chowk+to+china+full+movie+download+720p+filmywap PDF link annotation
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/16093046a6bd88---jikewotadokobumun.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160afcd6cdb4ab---4715364811.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/8dacf1cc00c502d754e7bac2df3e1040/3927182352.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/6tt9dosk5u72a5lmkbafvkmgv7/81484607594.pdfIn PDF document text
    • http://drivingschool-brno.eu/files/sudakitejoferuxif.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ea1edd9b5---nosamusutakakokik.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099d43ad2987---93093117494.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/13585533761.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076a2d9039a1---kufojagapenubonitoliso.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b95d0ea3fa4---21005931517.pdfIn PDF document text
    • https://ascinfratech.com/clientprojects/trading/file/26293570050.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/b12221f3fa00dca56af047358fd1e9e2/63215355387.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/1609d65381cb90---61626015200.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/4f2eef3157858519f70938f2352ea10c/69302670978.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6df820932---sekadarisesejuvib.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn 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://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000152a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152A1 5700 bytes
SHA-256: e7b49c6f0298267cd09af883ac747489271261295542c0185a5a8618aa028e73
font_01_sfnt_off00016603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16603 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off00017166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17166 11692 bytes
SHA-256: b49080ef253d3d3651e25df40ffe8590c35652d3a4a38d751752951bdd9a0aad
font_03_sfnt_off0001994f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1994F 9832 bytes
SHA-256: 45de2f81de53b0d0d12df23e3be420947a5d3cf850c902f2969c599d0a38f2b6

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