Malicious PDF — malware analysis report

Static analysis result for SHA-256 336806320795369a…

MALICIOUS

PDF

99.1 KB Created: 2021-08-05 05:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 8a92ef3619c6166ac47765467b43a5ba SHA-1: 9d38dc56076b21d3a10e1c6a8940dceba813d21b SHA-256: 336806320795369a80acb88b22081942d0779e5a1838cdd27f952a1e79576005
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The file functions as a link farm, containing numerous external URIs pointing to compromised WordPress upload storage and other disposable hosting sites. These links likely serve to redirect users to phishing pages or download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://garglob.ru/uplcv?utm_term=wr3d+wwe+2k19+mod+download+apk+free+download+by+mike PDF link annotation
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607214be3fd13---30074389008.pdfIn PDF document text
    • https://nhatngudongkinh.com/upload/ckupload/files/wevozofanoraj.pdfIn PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/b9v7r22jt7k3vekuq3qbmpnbud/leziwizobesizapulex.pdfIn PDF document text
    • http://flagrant-desir.com/userfiles/file/94673699716.pdfIn PDF document text
    • https://agenciaboom.com/wp-content/plugins/super-forms/uploads/php/files/nhtiqoj6s2dt32o3abjjv18o37/guwodinixokawifoxos.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/daa9e40d2f41d1ebee06d896e92e3059/batizoviji.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/e1637142a36f02322c8f61408502ad6c/55016886171.pdfIn PDF document text
    • https://miruyuta96.ru/admin/ckfinder/userfiles/files/lozunevixukidemazososoge.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/i8lq6dckofamu51s6b3hal2v00/luzomipulaz.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/3b4b56d4059c6cf6942436bc99373e8a/rovixafida.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16099134b44b02---webelepividopigifebuvu.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160fab8254fbda---82545237485.pdfIn PDF document text
    • http://szalkasszorutacskok.hu/app/webroot/files/content/files/lazinulajebozewiwatebixa.pdfIn PDF document text
    • https://vvpta-irvine.org/userfiles/file/86075642541.pdfIn PDF document text
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/b0d93d9f3cee66896019c7a41f7ed023/rufebesejaze.pdfIn PDF document text
    • http://campbellelectronics.com/uploads/16261433671.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160acad5364006---kujutilu.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608eacc037ec5---wejaputodir.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/46133161d837ed4e1dfa1811a6b37f84/17584019104.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/0lmf5bhvkkqd0n0nlhq99ssr15/fepaxodowobi.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cda1eab2767---76126743889.pdfIn PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/vavogajabukarurokesitele.pdfIn PDF document text
    • https://himanshikitchen.info/viking1/uploads/files/lavuzifofulof.pdfIn PDF document text
    • http://crm333.com/documentos/file/koxefivikoluwuwupes.pdfIn PDF document text
    • https://renesens21.com/ressources/upload/files/21875037136.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12217 11332 bytes
SHA-256: d1652dd1cf6aee1a5f0eab8b999a9e8cd76981b6805a90403f1321d0206bc656
font_01_sfnt_off00013c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C9E 15900 bytes
SHA-256: d66aa174c6e9aae8d2564a392ff419f6782584a2051bcbd592c97bd05be52ceb
font_02_sfnt_off0001657d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1657D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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