Malicious PDF — malware analysis report

Static analysis result for SHA-256 00892ee2184e2f48…

MALICIOUS

PDF

102.9 KB Created: 2021-08-20 05:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-23
MD5: 1592530d0740ce7d845a46206ebb7b23 SHA-1: 01eb1665ac6ea927b6639bfe0c3a2ae4f8c233ab SHA-256: 00892ee2184e2f4874137462e19ce3fb11aab08c8c527f2f063db581d973b3aa
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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://inwebjor.ru/uplcv?utm_term=presion+arterial+valores+normales+en+ni%C3%B1os+y+adultos PDF link annotation
    • http://jnafarms.com/clients/864068/File/xilamasinif.pdfIn PDF document text
    • http://zhouzhuank.com/v15/Upload/file/20216251853195604.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/257352f39f2ee5aacefd7bbab85fc3ee/89436569809.pdfIn PDF document text
    • http://robwalker.net/fckupload/file/tefajududejek.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/sl276rclesk7udeouhjdvjk5h0/71010356206.pdfIn PDF document text
    • https://linhquan-group.com/upload/ck/files/gevodurexufetewevejo.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/s8g320nbo6edadfr1l39h8u6li/lenepuduvujefivusazarejip.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a2023081147---mipavonoxufewopisa.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a960b11c540.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083943f49145---3802261752.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/fhofdoqmc7mfu2klrs9np7dv61/30952807891.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b53a4f02de---sanaxigan.pdfIn PDF document text
    • http://quickvideo.nl/userfiles/file/figosefizuram.pdfIn PDF document text
    • http://chandigarhdatarecovery.com/files/file/jenurobajokom.pdfIn PDF document text
    • https://avistravel.ro/userfiles/file/88295660020.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160914b1f20a3e---17468912397.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942b39b3be7---8897467221.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef64fd0f73---96605720405.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/54300494382.pdfIn PDF document text
    • http://mlsconsulting.net/cms/files/File/17387693073.pdfIn PDF document text
    • https://andhimazhai.com/images/files/80226124335.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_off000129fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001420f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1420F 18364 bytes
SHA-256: 2ec5fffe38c5cf7844257f32fc593cb19bca4f1259f21ad7482ea10ed58c5392
font_02_sfnt_off000170d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x170D7 10896 bytes
SHA-256: fe472538cf68397f15ef5effdcbbbb43390f3f13db002d65a70d4f12f5d77763

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