Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a165d99372a5e9…

MALICIOUS

PDF

73.5 KB Created: 2021-09-02 01:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: f1571d21f9995d4aa34a8fe80638e957 SHA-1: 1e1416ee91884d886bb24fad631a648f4a309226 SHA-256: 64a165d99372a5e9cec754fecfbf2e1e7c4c0306f46cd370b00d0f2ab79eb257
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable domains. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8254

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://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a30493bfba7---14448603223.pdf In PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbc6c7e722---1205713471.pdfIn PDF document text
    • https://alarrabnews.com/images/content/content/file/9139033057.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/o4renl3cofejj1ds1p0584sadt/fekilugalodolowamugebuve.pdfIn PDF document text
    • http://www.guus.edu.mn/ckfinder/userfiles/files/36586964056.pdfIn PDF document text
    • https://sandzak.best/wp-content/plugins/super-forms/uploads/php/files/14c2af8100dc9454764079aff786485e/27791786393.pdfIn PDF document text
    • https://doanhnghiepvietnam.niengiamdoanhnghiep.vn/img_duhoc/files/96087435848.pdfIn PDF document text
    • https://eternalbliss.net/file/50979293828.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c2bd48148c7---45573037428.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/c6f8cd5be70da0437322aba709e748c1/80588274734.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/gi4uk6a2ku5h1jpqg99qjltlik/52302272822.pdfIn PDF document text
    • http://www.addvanceo.info/userfiles/files/33145414871.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b57d95e2b11---59797401134.pdfIn PDF document text
    • http://universalestetic.com/userfiles/file/lojorowapidulesokaz.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/2e1442236f31a8b74fc0c76ac453009d/gonozuzozukuvej.pdfIn PDF document text
    • http://beloezoloto.ru/userfiles/file/716427231.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/lirez.pdfIn PDF document text
    • http://geluidsadviesnederland.nl/ckfinder/userfiles/files/82123020548.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/8e8621eb4165a769b2a7fa0869924a74/bepetuteluvur.pdfIn PDF document text
    • http://apsons.eu/files/file/42673605218.pdfIn PDF document text
    • https://www.bakirkoytemsilcisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c9f7b8463---46529920340.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612603b381b18---kexubo.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/m5ccuopv8ieda3sjtitl7s7mf2/nulogetenerenaxezunesejin.pdfIn PDF document text
    • http://arcos-eff.it/userfiles/files/luwekarumu.pdfIn PDF document text
    • http://a1-automotivegroup.com/upload/files/77325792982.pdfIn PDF document text
    • http://chothuexehochiminh.com/userfiles/file/30129319123.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e7769dce0d---dulifefubomafuvobo.pdfIn PDF document text
    • https://mokhalasati.com/userfiles/files/32864966618.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=uses+of+conical+pendulumPDF 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_off0000eb2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2C 10692 bytes
SHA-256: 4742ea8b9dbf1c9392920d049dfba1ee3ec0d386dbb0c0f6b867fca1e253feb9