Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b9d51eb018a3db…

MALICIOUS

PDF

77.6 KB Created: 2021-08-19 01:03:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e257a990a5c1dceb5bec98f80979e009 SHA-1: 83aebe87d96fc837c3a2959c4bfafbf2be121d8d SHA-256: 32b9d51eb018a3db3dfbb840fab9c8bb78fc6369b3adea3776846d994cb0b5e7
154 Risk Score

Malware Insights

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

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The primary goal appears to be directing users to external, potentially malicious, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6474

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cjcounsel.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pigizadilegepupalez.pdf In PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607255e73cc55---46864932608.pdfIn PDF document text
    • http://sendedianqi.com/upload_fck/file/2021-6-25/20210625030109625952.pdfIn PDF document text
    • http://polish-house.com/uploades/fckeditorfile/43505954466.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/0a9fa5742e7d40d5600b103f11af18df/99267614614.pdfIn PDF document text
    • https://okazdedziecko.pl/_files/Media/file/kozawuzusagab.pdfIn PDF document text
    • http://abimobiliare.pl/pliki/File/wuxoriri.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609bcbdd75064---wosagerexosus.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/2v4v53uf65gamn0fajg866s2r5/48337158882.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/1c9a570011840ade7273a65bd4fa6a26/vomekepata.pdfIn PDF document text
    • https://siam-royal-view.ru/data/files/78012537760.pdfIn PDF document text
    • http://w-mill.jp/images/file/gadesafifigepanujo.pdfIn PDF document text
    • https://khotelmarket.com/FileData/ckfinder/files/20210714_778601E839F1479E.pdfIn PDF document text
    • http://king-ber.com/UploadFiles/file/20210716152103584.pdfIn PDF document text
    • http://ropesadventure.com/d/files/nepezipejokodelokar.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/kt455k8l85eujbsbrp0994pjvi/jolapiwinuzeg.pdfIn PDF document text
    • http://johnlillylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/23203801455.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0d042969a---95997889497.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c95b6f6fec1---fananivamap.pdfIn PDF document text
    • https://calendarsunrooms.com/userfiles/files/womanafajetobokedup.pdfIn PDF document text
    • https://innovativallatgyogyszer.hu/fileok/file/nusujafit.pdfIn PDF document text
    • https://kentacademymiango.com/userfiles/file/xinuzo.pdfIn PDF document text
    • https://botorka.ro/userfiles/file/futuvobapujeniw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=what+does+annuit+coeptis+novus+ordo+seclorumPDF 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_off0000e50f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD26 10936 bytes
SHA-256: 478770ec60efe3b6b4558a17667ab34477c0848085c49847bf6e1c0073581a04

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