Malicious PDF — malware analysis report

Static analysis result for SHA-256 0964be4786f706f9…

MALICIOUS

PDF

82.5 KB Created: 2021-08-02 01:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: babbdba8fc0023cd31336b0e4d762329 SHA-1: 86e4f10d477834913dfe7ae5e2c2688957c9a9d2 SHA-256: 0964be4786f706f9deaefd60754708ec6a314117f36f84274c14174340f95e41
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs that point to a variety of domains, many of which appear to be compromised or disposable, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://infrive.ru/uplcv?utm_term=ley+de+oferta+y+demanda+ejercicios+resueltos PDF link annotation
    • http://j1medical.com/uploaded/file/motunozug.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a8e185dfa58---3746071419.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/28abffe3b1f0583c7f8b8dab1f646e94/letokilawixuwiju.pdfIn PDF document text
    • http://daoltrading.com/userData/board/file/79503062381.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/zelojatemosu.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/70260561460.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607721532d50d---vevakigivilibufipatoxi.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ac15abbf3f2---defijubururilezedevowes.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/ru8t2345rnqldgs6kt6nho1ln7/puzezososiwu.pdfIn PDF document text
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c1a380523cf---3861888671.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b07386c13b2---pazaworude.pdfIn PDF document text
    • http://irths.com/upload_files/files/jogafotomikaxukamami.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e831dbf01b---79378188615.pdfIn PDF document text
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/ed2839c8930ec4c9eafae6bd072786de/jobememi.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/53e6ac80dfab7ac5bd78a0b0e85fed5c/sajawifagagon.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160853acc2b221---xudojepezalamamejulatejug.pdfIn PDF document text
    • https://kme.pl/global/app/webroot/uploads/file/16262197788499.pdfIn PDF document text
    • http://namkhoabacninh.com/images/files/83499737769.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160741f940414d---rigalorezijedesuje.pdfIn PDF document text
    • http://alphanaturehk.com/userfiles/file/fimesetiledoro.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6aaa29006---tegexefuvop.pdfIn PDF document text
    • http://baraanduliaptti.org/userfiles/file/jelokibe.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/161010a29670a0---57381987930.pdfIn PDF document text
    • http://sun-green.de/ckfinder/userfiles/files/89435764833.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_off0000db66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB66 10936 bytes
SHA-256: 1449844a7d6eafc028068b776e9c5d3a0b65305e5d0c6dba267c0524b67658d1
font_01_sfnt_off0000f4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CCF 17880 bytes
SHA-256: ae1569b8266d7330d0158dd7eaf5cf8f53b21aec8b624651c5ff0fb0650b12cf

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