Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed695214b9d9cd5…

MALICIOUS

PDF

79.3 KB Created: 2021-09-01 05:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: d2d23733ad588f80c6583a628f9f2621 SHA-1: b8c892d034d977dcb01db9c4e7eab13ad1b102e8 SHA-256: 6ed695214b9d9cd54d4086798015dfad1b0e1abd23e54ed92d96c0eb33aeffaa
96 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress upload directories and disposable domains, indicating a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, supporting the interpretation that it is designed to lead users to potentially harmful content or phishing sites. No scripts were extracted, and the document body was unreadable, so the primary evidence comes from the URL heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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://tryinvest.eu/userfiles/files/74314702159.pdf In PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608536525a70c---sasurulisogoximajur.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d940993cf1---ledepesopetugobokan.pdfIn PDF document text
    • http://interwork.sk/userfiles/file/jepefujidasawarawi.pdfIn PDF document text
    • http://akademibt.com/resimler/files/51720116887.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f0028f0fd---30260670348.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/renojuvemevidaleruxijopo.pdfIn PDF document text
    • https://aslimitada.com/userfiles/file/72107638018.pdfIn PDF document text
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/17srb0v9kesh3vfjvk8plr2r7o/dudepodupuwijiz.pdfIn PDF document text
    • https://webmenuplus.com/images/file/vumilonedi.pdfIn PDF document text
    • http://bluestandard.pl/ckfinder/userfiles/files/segagipadabom.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/120e18d61e01db104501d2128149158d/80040684660.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/160befd36e65dc---54855371622.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/birbdusjiedkmdt3kevgc46v61/dabevimivexod.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1271ea6a2---95639899200.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/107d60c4c0b0a884cb2e7e906b50fb6f/dixele.pdfIn PDF document text
    • http://dailycan.com/userfiles/files/40120914422.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/7hkufb1iujtsqbfsq4vra8avt6/galitarotelipes.pdfIn PDF document text
    • http://veiligheidsslot.nl/ckfinder/userfiles/files/borodef.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607594783ab05---44855741388.pdfIn PDF document text
    • https://triptoboloyfoundation.org/editorsfiles/files/renuzato.pdfIn PDF document text
    • https://maugli24.ru/wp-content/plugins/super-forms/uploads/php/files/395a9b6e8ca68dbc9b48d7663d7e847c/nefopogidi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=how+long+do+it+take+to+cook+smoked+neck+bonesPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d03a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03A 17716 bytes
SHA-256: eaf08b5678ef3c06a8442bd358a203c11ebc37123a445380887bfaeddec25d5b
font_01_sfnt_off0000fe13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001162a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1162A 10924 bytes
SHA-256: b435b371dc7c1572a138518b26abc52517847ebe6f0d5cf136ebdcee6858b488

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