Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd0a54594e4f66e…

MALICIOUS

PDF

60.9 KB Created: 2021-09-22 18:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 43afd0f9fe7d873ae9c95bcee8033f08 SHA-1: a14e551a8355cf91bcb0a8b25fcc692f344b94bd SHA-256: 2dd0a54594e4f66ef95b43e332a4f2732eb81286b4a49bfe21063b5b39b278e6
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code. The sample also exhibits characteristics of a link farm, with numerous external URIs pointing to potentially compromised or disposable hosting, suggesting an attempt to redirect users to malicious sites. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7265

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://em-ail.ch/pictures/2/12186342348.pdf In PDF document text
    • https://estoniapools.com/contents/files/89377078534.pdfIn PDF document text
    • http://www.keizerco.nl/userFiles/file/66641592695.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135fc6b82602---75074851136.pdfIn PDF document text
    • https://mma-montessori.com/admin/ckfinder/userfiles/files/48844631256.pdfIn PDF document text
    • http://ambcavallon.eu/userfiles/files/32088740912.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/58efbf52d83bd250af26a30b312931da/makixejaf.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/212f37d9f05d5c13f7ec55d51818abba/joralin.pdfIn PDF document text
    • http://glassick.com/userfiles/file/woxavobajerasa.pdfIn PDF document text
    • https://freebcard.com/ckfinder/userfiles/files/25108352717.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/neson.pdfIn PDF document text
    • http://studiolauramoschini.it/userfiles/files/22424299071.pdfIn PDF document text
    • https://xn--interpeas-r6a.es/upload/files/tesosudowev.pdfIn PDF document text
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/t3g2ggebqgcbibod74o3rffcp1/37856257679.pdfIn PDF document text
    • http://sun-dr.com/uploads/files/202109021115566853.pdfIn PDF document text
    • http://travellightnepal.com/userfiles/file/mabusazibupoko.pdfIn PDF document text
    • https://ms2gacor.com/contents/files/xinugeninolojiv.pdfIn PDF document text
    • https://wwa.bdbabymart.com/app/webroot/ckfinder/userfiles/files/golepudezivebogodiz.pdfIn PDF document text
    • https://machinex-machines.com/UserFiles/File/56304150309.pdfIn PDF document text
    • http://stsmcc.org/www/js/ckfinder/userfiles/files/fofikeza.pdfIn PDF document text
    • http://louisefarmersmith.com/admin/ckeditor/ckfinder/userfiles/files/57089166053.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/065b0c6eb107a9ea4ccbc7d4e24bd976/58439250632.pdfIn PDF document text
    • http://tverzhilservis.ru/foktver.ru/ckfinder/userfiles/files/43452459282.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=asphalt+8+mod+apk+unlimited+money+and+tokens+android+1PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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