Malicious PDF — malware analysis report

Static analysis result for SHA-256 430dd61ad970a082…

MALICIOUS

PDF

69.8 KB Created: 2021-09-05 06:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: de028bfddac94ebfa1c6298fe768511b SHA-1: f64bc33fb39c18185001699cfea7a29b66e32d6e SHA-256: 430dd61ad970a0824c45d5cb4dede6c0e41f3483d2230f335e032cb2442c55e8
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple disposable domains and compromised WordPress sites, aiming to trick users into downloading further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9265

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://africa-emergence2019.com/userfiles/file/vevenofikanurodob.pdf In PDF document text
    • https://sukaunited4d.vip/contents//files/69304718897.pdfIn PDF document text
    • http://pitneyclan.com/clients/c/c7/c7afcfad87c307b096642b2e35f52d25/File/83681459064.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/95bfbcb41156443c83f9eab75e405c6b/gelav.pdfIn PDF document text
    • http://appli-veolia.net/ckfinder/userfiles/files/madumizotexipob.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f47ce2d826---gikatowewopogovozi.pdfIn PDF document text
    • https://ecpa.fr/uploaded/file/45486001625.pdfIn PDF document text
    • http://balone.net/_upload/file///5003034797.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/44461669454.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/6f23d215537420c6ccbb6aa47601bcfd/nugodozi.pdfIn PDF document text
    • http://ya-ke.cn/admin/upload/37910089647.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/dc66dc1cfed7c6ebe9dafb685835a717/nejadapimutuwonus.pdfIn PDF document text
    • https://getadoc.in/ckfinder/userfiles/files/nowenawirafu.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094c871c9ec7---84936037638.pdfIn PDF document text
    • http://thesecurityguardunion.ca/userfiles/files/notulitilewobopab.pdfIn PDF document text
    • http://xn--38-mlcqjbufcz6h.xn--p1ai/userfiles/file/pisujukenebepusuvidisomi.pdfIn PDF document text
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/97c65db20ecf52648e724e2ba9b150f2/2485698170.pdfIn PDF document text
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083477232701---tarukogibone.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/689cdf992d80eef6783c3301966f62d2/3865437282.pdfIn PDF document text
    • http://ixtvs.de/_upload_bilder/_filemanager/file/20979345580.pdfIn PDF document text
    • http://nasfthr.com/userfiles/file/zomixawetepanurufe.pdfIn PDF document text
    • http://weifong.tw/fckimages/file/sezifumisowapo.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/tijelilos.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a986cf889a7---zarope.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=litanie+d%27adoration+du+saint+sacrement+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_off0000d3a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A3 19056 bytes
SHA-256: 8448d422fa1075c868e4254208213c8b2d7ca49dc4ba9387c8e569607d413c34
font_01_sfnt_off000102ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102FF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1