Malicious PDF — malware analysis report

Static analysis result for SHA-256 960f423cb65ab73d…

MALICIOUS

PDF

106.8 KB Created: 2021-07-04 14:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: e859ed125a988f9129cea1be9e606d63 SHA-1: f25b2aa76c5309bd5d83a99037b1cfd991491597 SHA-256: 960f423cb65ab73d778b09555dd5a402917963b15480b28bef546e1647ee9069
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to lure users to malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The file's structure and embedded links indicate it's designed to facilitate phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3480

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 https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4cbf65e33e---25174471715.pdf In PDF document text
    • https://campermagazine.tv/public/file/14557598682.pdfIn PDF document text
    • http://comp-art.ru/userfiles/file/36368982690.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/i06c1m9eajk7osn8k3ummbpbn2/dadatazaku.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6711e521cc---93190453582.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/vuzusokefasu.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/9bd215d0b1a8ce53edff24b1b9e3e7e2/24429696027.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160794a45394d1---69464126310.pdfIn PDF document text
    • https://windsbs.biz/files/file/68468065091.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/67069306161.pdfIn PDF document text
    • http://teplospectr.ru/images/files/10869495152.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c871a40a791---29357268714.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8494caed6d---57521207080.pdfIn PDF document text
    • http://monkey-do.net/userfiles/file/kisamamozolejut.pdfIn PDF document text
    • http://immobilieninvestors.eu/userfiles/file/31558477796.pdfIn PDF document text
    • https://designclarf.it/file/zanovakoxibin.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b918bbc8d10---61179771368.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089e9d060cb0---62370903242.pdfIn PDF document text
    • https://ka-base.no/images_content/file/45150487153.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/52475746685.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/4da7d90f850f28b93398b7602b3b40bf/wituro.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/f5v93v9hk3ab1jt1v1v6qot3i5/jegixivitakazoxufivigo.pdfIn PDF document text
    • http://autowagon.it/userfiles/files/bokolamir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=abstinence+meaning+in+the+biblePDF 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_off00015b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B59 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00017370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17370 10576 bytes
SHA-256: c4c5f5ee617028fd55924eb1d47f23cff96aec5a8b45036ba94a897cf68fb7f2

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