Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff2594801266b7d6…

MALICIOUS

PDF

116.8 KB Created: 2021-08-10 02:04:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: fd36ac84bfca0a2a5681c85971a4c22f SHA-1: addfaf45055b235938af1a24f85d67ead697cc59 SHA-256: ff2594801266b7d694d27f3eebd36e88ff66a73d4ac3d6e39488c06d518c4ad8
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm for SEO manipulation or to distribute further malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://urbanconstructions.org/images/uploadedimages/file/gososesave.pdf In PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa2b99f5cf---rujepojepomez.pdfIn PDF document text
    • https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/9e57921707e0c1eb3e0a9dda81f887f4/rudumovaf.pdfIn PDF document text
    • http://worldcar.jp/userfiles/files/posibunedad.pdfIn PDF document text
    • http://jumpinfit.it/userfiles/files/jogemanovidevaxenibe.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/c426726c2e57856325cd68246540b979/27979524318.pdfIn PDF document text
    • http://piotrkowska77.pl/zdjeciafile/79583947516.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/cee8d26d7dd29b354c3dd5e0bdc1a4bc/5230337400.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/vazixugizuje.pdfIn PDF document text
    • https://tbsva.org/Upload/files/20210724040951.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edfc4aa6f1c---xiwuvesiwewumututasixir.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607baed3132a1---faderifaretozipisuno.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608848a16895b---94561044137.pdfIn PDF document text
    • https://tsegypt.com/file/14016078826.pdfIn PDF document text
    • http://carrollcountylawyers.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/8177026867.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/4f1aeb03690389efbe86fc0613c5e49e/4070430554.pdfIn PDF document text
    • https://khanikango.in/file/77028060698.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/biqretur19c5fj5vmm9c30lbi4/34290369822.pdfIn PDF document text
    • https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c97441816e2---zevodipiliwajavu.pdfIn PDF document text
    • http://murielbellhomes.com/userfiles/files/tipotureboni.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3c96cc99a1---31288213386.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=amharic+keyboard+for+pc+free+downloadPDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BC0 18500 bytes
SHA-256: c0a96ad1708436b2b04b8c08b45db2478ce50c68c3fa399b3193109ebd435ca4
font_01_sfnt_off00017cac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17CAC 16344 bytes
SHA-256: 5cd8a120e106fc2d4fc1855603a636a3ce922decfb1b4d98f17a4a5450337c58
font_02_sfnt_off000192a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x192A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001aabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AABC 11032 bytes
SHA-256: 3b15624384cdf3e7130c6533e3a7e947c5c66fe26fd4b7d500a6d11504947443

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