Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2170e8572f2ec96…

MALICIOUS

PDF

108.7 KB Created: 2021-06-27 21:01:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 46b9e34d39aaa8700d1791322d0c9aea SHA-1: 4ba08725c14cbd6723ee306134b2b6ba7de4ab93 SHA-256: f2170e8572f2ec96cf06304574cfcb6f2baa00dd2574c9a38afc64e81566b1b5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous external URIs and links to compromised WordPress upload storage, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. Although no scripts were directly extracted, the structure and URL patterns are consistent with malicious PDF lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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://coretry.ru/uplcv?utm_term=good+brawlers+for+super+city+rampage PDF link annotation
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/dd33e93df4545e82934dc71b8f3d9b06/52019901688.pdfIn PDF document text
    • http://novelinternationalschool.com/ckfinder/userfiles/files/benibejitoj.pdfIn PDF document text
    • https://cleanenergy.mn/uploads/files/voxelidaju.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/aeec98c01273d5c261f8880112890144/liwobapujedexudemitunoza.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/16072c83b1b437---ligimeda.pdfIn PDF document text
    • http://laros.cz/UserFiles/file/55049235890.pdfIn PDF document text
    • https://rdsdealers.com/ckfinder/userfiles/files/fatopovaraxatovivenogisi.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098673ad81a3---mufuzegelisonor.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/ec2f30bf890ea9df1ba4b06616e92642/24578753167.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cde3d1c7e63.pdfIn PDF document text
    • https://www.indoorclub-informa.com/boletines/img/file/bozaf.pdfIn PDF document text
    • http://pferdefreunde-brueckenhof.de/sites/default/files/userfiles/file/76699373110.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/d6c35512bfdb1daa98c9d41f09305b4c/13094227728.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786a9c73064---2020663598.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/d8ba69d3f7881380e3d0f1b23384d5f8/jizotivedanosodava.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/8d433bc7959146df9c36affb53b46828/remuwoxitopuvaju.pdfIn PDF document text
    • https://hiampelectric.com/wp-content/plugins/super-forms/uploads/php/files/aba6b9aa4818d894edc11c8699e3f1b1/maketep.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/xekatiwer.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a86d2a187b7---7504222282.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d31928c1c8---vumegagabeboziwuz.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607367f16030b---nolopekajebipowov.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a4473a6fd18---65447723061.pdfIn PDF document text
    • http://bigxra.com/uploadfile/file/2021062014525673499.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/63713dbe4585e3cb3a9f8f50880f3afd/85320190447.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001376d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1376D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014f84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F84 11336 bytes
SHA-256: fac15002f4dee387e6f474c1d0fb17d04d93fb6b6645190315cfa2fddc503318
font_02_sfnt_off000169e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169E8 19288 bytes
SHA-256: b3568830220cf65e746271016ad77e9b1c3cb042d6c895d57e3da9706faa2c03
font_03_sfnt_off00019b48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B48 2140 bytes
SHA-256: 1403b73c46ad489b25e5388b60c511e3e110e5224e3d4b162f8bf7f70bbc6fa7

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