Malicious PDF — malware analysis report

Static analysis result for SHA-256 e600cd2f0004a46d…

MALICIOUS

PDF

76.6 KB Created: 2021-09-06 15:48:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 5b5b54c899ca4a2cbd1ef7d81860e78e SHA-1: b9e81c23d7986dbc191560f845cb5dbdd23e60d7 SHA-256: e600cd2f0004a46d07a8c0cab41441ac6c3fa564f1ad5d03b54f6f21f46f2f0d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous external URIs and link farm patterns, suggesting an attempt to redirect users to potentially malicious websites. The presence of compromised CMS upload links further indicates a malicious intent to host or distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9914

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://garglob.ru/uplcv?utm_term=pfister+indira+faucet+manual PDF link annotation
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/97c372487b0a7776aacbe5ff002765cf/futepivu.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/6de02f26258de831692257f6b2d0fea4/zibulebuve.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/21239795cf9c2ee505dd420b6d578fec/fubesaj.pdfIn PDF document text
    • http://lucchetta.net/userfiles/files/jobibopuzoxasonewomejagep.pdfIn PDF document text
    • https://yukkumpulgroup1.com/contents/files/99729382550.pdfIn PDF document text
    • https://economiadecomunion.net/ckfinder/userfiles/files/16433526417.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/bijeverofekumaxinogev.pdfIn PDF document text
    • https://topclassgreenery.nl/images/file/99710507561.pdfIn PDF document text
    • http://etre-belle.su/images/file/lazowun.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/c91b333ea5b39e106bf897e4c96507dd/vubotu.pdfIn PDF document text
    • http://www.teeintact.com/admin/fckeditor/editor/filemanager/connectors/php/img/file/xuwafiroxexuretaxalubupo.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/zogolinawemude.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/5a63592e7a5970996a236c055f70ea5e/lumiwawosu.pdfIn PDF document text
    • http://ok-poland.com/userfiles/file/mamoz.pdfIn PDF document text
    • http://benetworkingpro.com/ckfinder/userfiles/files/mipimeloxaxa.pdfIn PDF document text
    • http://uci.ir/userfiles/file/toxufiropepujid.pdfIn PDF document text
    • http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/rlpgiqkodsrma19j2avv0lvvm3/24093322267.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac12e43e9f8---43162046638.pdfIn PDF document text
    • http://urdu-hadith.com/survey/userfiles/files/wanuzuroj.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16074a2b2b1766---30200926327.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/bb0acf3143a76a62c082e238e049354f/14236339890.pdfIn PDF document text
    • http://world-housing.jp/ckfinder/userfiles/files/papon.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/mp3k6mv99dav7gf4t4iujhl8n8/zatapumaxes.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/50417623568.pdfIn PDF document text
    • http://cdmvt.cz/sites/default/files/89448954220.pdfIn PDF document text
    • http://irodori.kir.jp/files/file/difusoji.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_off0000c50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC50F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dd21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD21 17584 bytes
SHA-256: eee0ad871fd4c745798214164caba38aa7727badaf093dc3891b127d8d21601f
font_02_sfnt_off00010aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA2 10620 bytes
SHA-256: 60a63bd0ed73074eda71d347d7af4d08f95264ac113b494e66b678bea14ad27f

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