Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d47896a67ed5e64…

MALICIOUS

PDF

65.7 KB Created: 2021-09-12 02:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f2605ed555ac73c08dd9ba9567e71c29 SHA-1: c73543f2a20d464bf148a12565aadcaee9dfd4ae SHA-256: 0d47896a67ed5e64e19bdad42ee43c1e6a59069542b56948219e9e3a42f672e0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs that point to various domains, many of which appear to be compromised or disposable hosting. Heuristics indicate it functions as a link farm, likely intended to redirect users to phishing sites or download further malware. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5647

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://oniceh.ru/uplcv?utm_term=search+engine+optimization+brisbane PDF link annotation
    • https://www.agencesramos.com/ckfinder/userfiles/files/badotanalosotekeguse.pdfIn PDF document text
    • http://garantc.ru/userfiles/file/zovifewo.pdfIn PDF document text
    • http://lingeriedediva.com/UploadFile/file/2021091020064573499.pdfIn PDF document text
    • http://muntepa.com/userfiles/files/97645571906.pdfIn PDF document text
    • https://kga-am-adlergestell-ev.de/kga/ckfinder/userfiles/files/venukaxipujulapinafov.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161303308e5362---59638241261.pdfIn PDF document text
    • http://cuacuongiare.vn/upload/files/pinogomugelalebum.pdfIn PDF document text
    • http://www.benyowsky.com/resources/files/86654742284.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/69107633476.pdfIn PDF document text
    • http://cosmik-kinoteatr.ru/sadm_files/53127502238.pdfIn PDF document text
    • https://indobaliart.com/sitefiles/file/sonabejef.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/a22a1acc7cb87a009fae51df9eb83234/47548746003.pdfIn PDF document text
    • http://www.hgbehringer.de/img/files/files/95442364586.pdfIn PDF document text
    • http://sportsgarten.com/editorData/file/vojupumevosopew.pdfIn PDF document text
    • https://yantrasearch.com/ckfinder/userfiles/files/40136673129.pdfIn PDF document text
    • http://parmalab.it/userfiles/files/8478187743.pdfIn PDF document text
    • http://luckdidea.com/ckfinder/images_store/files/68322535719.pdfIn PDF document text
    • https://clubesolbra.com/uploads/files/luwalilizozelilarivukomin.pdfIn PDF document text
    • https://108pizza.pl/uploads/userfiles/files/24137753936.pdfIn PDF document text
    • https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613343caf2cca---fovuso.pdfIn PDF document text
    • https://detectagsafety.com/ckfinder/userfiles/files/womazubadubuterasesonerox.pdfIn PDF document text
    • https://lrdreamteam.com/files/files/file/InfoProduct/file/mudusiterepow.pdfIn PDF document text
    • http://tbm-mova.by/images_from_html_editor/file/60146022064.pdfIn PDF document text
    • http://cuacuonnhanh.vn/Images_upload/files/pavufoguwanoteker.pdfIn PDF document text
    • http://pijntherapie.be/uploads/files/gogozut.pdfIn PDF document text
    • https://mmoxx.mn/userfiles/files/51527747011.pdfIn PDF document text
    • 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_off0000e17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE17A 17448 bytes
SHA-256: 99a27055a76b8035f2b852f7311a7e054ab5315ac109e83262efc058fb1abdd8

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