Malicious PDF — malware analysis report

Static analysis result for SHA-256 edddfdaaac6a6b82…

MALICIOUS

PDF

65.1 KB Created: 2021-09-14 14:28:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: ecf5d344cb1ad4e04467ec1fab9fbc7c SHA-1: e385cf2a579535369b3cfa0b64f1da7c01ef1c5e SHA-256: edddfdaaac6a6b82b66ce52d9e9c37dd58832a35ecaf9788957193dea540e059
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm designed to redirect users to potentially malicious content. The presence of numerous external URIs, many with 'utm_term' parameters, suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5448

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://huntic.ru/uplcv?utm_term=fahrenheit+451+pdf+download PDF link annotation
    • https://qkon.ca/images/file/83213340215.pdfIn PDF document text
    • https://n-zvuk.ru/upload/file/74346421029.pdfIn PDF document text
    • http://nickels.design/ckfinder/userfiles/files/10756248695.pdfIn PDF document text
    • https://www.scmsgroup.org/ckfinder/userfiles/files/fenisamosogifirevop.pdfIn PDF document text
    • https://stayinbranson.com/ckfinder/triplebuserfiles/file/1177132162.pdfIn PDF document text
    • http://munnartourism.com/uploads/file/situgaji.pdfIn PDF document text
    • http://perfekt-dom.pl/designhome/admin/userfiles/file/ziletofipiso.pdfIn PDF document text
    • http://clinical-pain.com/pds/userfiles/files/76718241964.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/qo1irestl6iv3n4dpi52k5elmo/sudebinanarakofemupe.pdfIn PDF document text
    • https://naves.cz/res/file/moxekifovisizaloja.pdfIn PDF document text
    • https://dnmpaint.com/sdcc/images/file/jasitejosobabe.pdfIn PDF document text
    • https://przygodanaukrainie.pl/admin/ckfinder/userfiles/files/80352892509.pdfIn PDF document text
    • http://boletos.luzservicos.com/ckfinder/userfiles/files/8695302719.pdfIn PDF document text
    • https://e-casainteligenta.ro/userfiles/file/79912963552.pdfIn PDF document text
    • http://holzweiss.at/99130155173.pdfIn PDF document text
    • https://superpackeg.com/userfiles/file/gujotofibazitexo.pdfIn PDF document text
    • http://hamzalegalservices.com/userfiles/file/3412567201.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/8419603059.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131bdb860b49---25987331835.pdfIn PDF document text
    • http://df-2.de/images/daten/file/daromadotaxadaxok.pdfIn PDF document text
    • https://wietsevoermans.nl/ckfinder/userfiles/files/laridamenenusafu.pdfIn PDF document text
    • http://trumoi-khutrung.com/upload/files/rafopidopiwefewowiru.pdfIn PDF document text
    • http://arcos-eff.it/userfiles/files/43095452763.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB02 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE319 10752 bytes
SHA-256: 1a0b9ead2b28d6e22e50ee999f07c03f6411374b44399a6ee33c1f7e33ca47e0

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