Malicious PDF — malware analysis report

Static analysis result for SHA-256 450daf45f5d393a2…

MALICIOUS

PDF

79.4 KB Created: 2021-09-05 11:55:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0db6f0c529ab4bf72b791b6d93951bfa SHA-1: f5980081fe1730fcd8197ba0d866383438d79b48 SHA-256: 450daf45f5d393a22013a224dfb1e08a1ca6da20ab4e372aa79430000bae5e21
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document functions as a link farm, containing numerous URLs that point to external websites, many of which are hosted on compromised CMS platforms or disposable domains. These links are likely intended to lead users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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=gormiti+2018+da+colorare+pdf PDF link annotation
    • https://angkortaxiservice.com/userfiles/file/xusomitexisem.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/gl2lh7e1rkvtvf10adk3kiov69/xoputamujugutarexamazo.pdfIn PDF document text
    • http://worldcar.jp/userfiles/files/46613774299.pdfIn PDF document text
    • http://alnadaoil.com/userfiles/file/gejevepezepu.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c6ee09f0e4e---gusefisobapipotox.pdfIn PDF document text
    • https://excellencetogether.com/img/files/file/waguw.pdfIn PDF document text
    • https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/t1ocuigjq24qa98dandgi4ir3r/99705524653.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/5cca2074b4998ae5cb7ee93b2d45917c/68340071113.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/40dece58d0c37985fcefb09dc6489b14/foluxejodomos.pdfIn PDF document text
    • https://healthmatters.me/userfiles/file/walijetumezezenidiso.pdfIn PDF document text
    • http://safeabortionnepal.com/userfiles/file/kegosimepujowanidowufasof.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/kewinonoxekizunu.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/161235d44b6668---71546817587.pdfIn PDF document text
    • https://htlexpress.com/ckfinder/userfiles/files/11046431685.pdfIn PDF document text
    • https://hantverksakuten.se/ckfinder/userfiles/files/72737695935.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/650a1b7fa071031b207bfdefe7e25614/84793195740.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dbf05de241---rupunumikoxaxo.pdfIn PDF document text
    • https://chambres-lannion.fr/userfiles/file/83497883978.pdfIn PDF document text
    • http://mobilenmr.com/files/files/7714274120.pdfIn PDF document text
    • http://cu-hinothai.com/ckfinder/userfiles/files/2740834919.pdfIn PDF document text
    • https://hondamienbac.vn/userfiles/file/fubatow.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dfe7bcc3190---65890438212.pdfIn PDF document text
    • http://grupophi.es/uploads/files/86659757995.pdfIn PDF document text
    • https://sevenhillsgroup.net/ckfinder/userfiles/files/reboson.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_off0000cd28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD28 18480 bytes
SHA-256: 9bf64a6b3a07944f42cc44a1db39ab8ff4c1e2e8dfece0b865094a54e0782310
font_01_sfnt_off0000fdfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11612 11048 bytes
SHA-256: 806a18fafd1262a50b9825c3e95cf151492532aaecb7bbf393646ce08bed91db

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