Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b8422369fcfd5c…

MALICIOUS

PDF

77.6 KB Created: 2021-09-06 09:55:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b9a2c8d0c74252dd5a3120343e3a7530 SHA-1: ef09797c47265ddd4b8750821d7463e3001611c6 SHA-256: f2b8422369fcfd5c92c55551726356b5ff5208c7a9419bec43deada9434211d6
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS upload storage and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs are likely used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6548

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://falegnameriacastiglione.it/userfiles/files/34730840721.pdf In PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/e0f5269f75d1541ddece52e8b391c195/gisumirivuluj.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e530c205fb---48013659076.pdfIn PDF document text
    • https://himalmanpower.com/ckfinder/userfiles/files/vobatobezobon.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9afc794adf---jepozoketorowojosikaxi.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/pawitasesarivesedo.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/sejam.pdfIn PDF document text
    • http://uhy-th.com/image/upload/files/zuwatovozejaketixav.pdfIn PDF document text
    • http://ks-system.co.uk/ckfinder/userfiles/files/pazilubokexowuletosabu.pdfIn PDF document text
    • http://domplus.su/userfiles/files/27191146277.pdfIn PDF document text
    • http://parentini.it/userfiles/files/65630599034.pdfIn PDF document text
    • http://expertcomptablecourreges.fr/michel_courreges/userfiles/file/suposepisuzumavagozeraj.pdfIn PDF document text
    • http://drivingtesttips.ie/fckeditor/userfiles/file/97860801581.pdfIn PDF document text
    • http://tucholainfo.pl/userfiles/file/nivuve.pdfIn PDF document text
    • http://francisfamilyreunion.net/clients/870293/File/fupitusixolelow.pdfIn PDF document text
    • http://balone.net/_upload/file///lewukinosimukunetenanum.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/688ecc5d63dd32af6d2e3dc40d6d6b57/puwakid.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/160a5877831801---mibutenozavevuta.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160d4e863bce0e---nimamifebu.pdfIn PDF document text
    • http://karate-talence.com/newsite/userfiles/files/joseguxovazibimito.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/161054d6b82fd4---9350138394.pdfIn PDF document text
    • https://mondoaudio.it/img/uploaded/file/tizimewopiganipev.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096dd0b3c900---46159786180.pdfIn PDF document text
    • http://grgct.com/ckfinder/userfiles/files/vowezoxo.pdfIn PDF document text
    • http://rotarylaspalmas.org/documentos/file/wodaseb.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=jurnal+organogenesis+hewan+pdfPDF 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_off000100e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.