Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e6d438b171de571…

MALICIOUS

PDF

125.4 KB Created: 2021-09-07 08:15:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7d4843b0928db275b83281480f11a800 SHA-1: d59c950d318568afb2c151ddff2156fe493c88a8 SHA-256: 6e6d438b171de5712fbdb539bac3e03a84745696d4e29703010dd81b26da03d8
124 Risk Score

Malware Insights

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

The sample is identified as malicious by ClamAV and exhibits characteristics of a link farm, with numerous embedded URLs pointing to various domains. Several of these URLs are hosted on compromised WordPress sites or disposable domains, suggesting an attempt to distribute malicious content or phish users. The PDF structure and embedded links align with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3704

Heuristics 5

  • 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
  • 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://botosani.ro/img/uploads/file/xoxofosuvupox.pdf In PDF document text
    • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/c69f42a9c465c861cb98755a183a0bf9/nususokuxu.pdfIn PDF document text
    • http://kibunajcc.com/ckfinder/userfiles/files/kenefopufetewajodabu.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1606ffc5cb4ce8---zenulogovugipejizu.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136f1e79a1d0---92277161921.pdfIn PDF document text
    • https://cleaner.pl/userfiles/file/53309674018.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/096f674770620e675d4c72ac574b036f/67125335728.pdfIn PDF document text
    • http://x04ydivan.ru/userfiles/file/97128896418.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160aea5298141d---momisolufid.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160e61d7370c07---20883887441.pdfIn PDF document text
    • http://sintellect.ru/Repository/file/15824014933.pdfIn PDF document text
    • https://musikkursus.dk/userfiles/file/91788327855.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/gomikumimesoremamej.pdfIn PDF document text
    • http://www.mostenpo.jp/userfiles/files/malaxobe.pdfIn PDF document text
    • http://joesservicecenternj.com/userfiles/files/pukunonezi.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/8041154785.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/vk3tqhhbif5qagq86kt9g9voi3/tepewijarudinuru.pdfIn PDF document text
    • https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/8e89b76d5162e46492280cddbb256c0f/pugoferogofomixobado.pdfIn PDF document text
    • http://pickup-ws.com/userfiles/files/takurale.pdfIn PDF document text
    • http://dlt-nkp.com/fileupload//file/vonuzefosesaxuxixer.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088939499a57---43764207797.pdfIn PDF document text
    • http://manisafar.com/basefile/marcosafarir/files/21903214648.pdfIn PDF document text
    • http://harlit.com/upfiles/file/11902846330In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=malformaciones+congenitas+de+la+cara+pdfPDF link annotation
    • 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_off0001a203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A203 10956 bytes
SHA-256: c8f2f03b0b80093d0cecd886181906db15cb886f6a22f7fbe609467644dd6b33
font_01_sfnt_off0001bb39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB39 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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