Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad80ac11bbd64af…

MALICIOUS

PDF

84.8 KB Created: 2021-07-09 15:58:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a5b59cf520606128beca5b335b250c6d SHA-1: 10a57b0fa4301d7c72c813c90a8aa15977a7d51a SHA-256: 2ad80ac11bbd64af99db147dc881f7dbb00261414f22c6619a4471a4459ecf07
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan distribution attempt. It contains numerous external links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document's structure and embedded URLs strongly indicate a phishing campaign aimed at tricking users into visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://wastran.ru/uplcv?utm_term=bending+of+simply+supported+beam PDF link annotation
    • https://pingthye.com/userfiles/files/83011167448.pdfIn PDF document text
    • http://thanuyentea.com/ckfinder/userfiles/files/11399170198.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608833f8cd24b---65590333817.pdfIn PDF document text
    • http://giustizianuova.it/userfiles/file/ropobelawopefenikozelaxa.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/sa7v7fo0p2if2jcsn3clgeeuh3/29497220337.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/437f1e22d9fe9f223e16f5a58a0c7f15/23280797777.pdfIn PDF document text
    • https://grupo-kayros.com/userfiles/file/junalobidunijesikozexunur.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0dcf22e25---70351699804.pdfIn PDF document text
    • http://ipublicity.cz/data/file/87150625423.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/8b905dba1abcfd3d6918aa26f5615972/perovugomezukavel.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/033b9f58eb2c57e2c0c389b5a39ffe8b/76130908351.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/q796egdapdguvc28brrqeoou32/66897089976.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071dcc5c33ad---melewekujodanubigojojoxo.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acc832c7682---96453747226.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607508f98d40e---fexemeze.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a737c99b488---98504953112.pdfIn PDF document text
    • https://scapetime.net/images/website/user/files/39867028588.pdfIn PDF document text
    • https://whitesal.com/data/images/file/6045_20210604115819.pdfIn PDF document text
    • https://capital-tic.com/upload/ckfinder_temp/files/20210624205918.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609060f3f2357---fojanufuziwomejisib.pdfIn PDF document text
    • https://mosallaesf.ir/uploads/ck/files/sikawata.pdfIn PDF document text
    • http://joshuadacosta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b08d6c83b4d---57617547634.pdfIn PDF document text
    • https://artbynela.com/uploads/file/40842589774.pdfIn PDF document text
    • http://debandhelder.nl/ckfinder/userfiles/files/jodibas.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160802173b9f23---xudit.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_off0000e595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE595 11248 bytes
SHA-256: 4f264bddf84ca8f41717cce02dff36bafc141598fc502fed519e3ad1641acf70
font_01_sfnt_off0000ff8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8D 17556 bytes
SHA-256: 74f7bb10fff58e68c735a97526718a598db101cde32eff1928eacc3da910ea48
font_02_sfnt_off00012d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D97 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1