Malicious PDF — malware analysis report

Static analysis result for SHA-256 9390083750673516…

MALICIOUS

PDF

70.3 KB Created: 2021-08-15 22:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: fd4a8a30937db087d535b6d64fc56491 SHA-1: f19c7f39ae93f2183aee603c502fa1bf95baecb7 SHA-256: 93900837506735167b1a1ff0170e3a057de2ac842966d4b66e0ac990902cde90
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to compromised WordPress sites and disposable hosting domains, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious content or further stages of an attack. The document body was unreadable, but the heuristics and URL analysis are sufficient to determine the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9073

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://la-roofers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160f235676bb89---xobezupumixagit.pdf In PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/osb3gfs1v51lgsbe860048h81q/xaladamevepeniwaja.pdfIn PDF document text
    • http://ozari-ua.com/files/file/78071486184.pdfIn PDF document text
    • http://healingtown.org/userData/board/file/42158613074.pdfIn PDF document text
    • https://alutat.com/data/file/wumoxipovogepepimegumetif.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1610ee1ea6afb9---bufuteraso.pdfIn PDF document text
    • http://sip7.online/wp-content/plugins/super-forms/uploads/php/files/2ace9a53fc24a5dd6fd3acd6c104e645/69546488103.pdfIn PDF document text
    • http://mai-colle.jp/userfiles/file/gogatajojipakosesum.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f65cc148f8---pexodajilonisolizax.pdfIn PDF document text
    • https://jambukuning.com/contents//files/mabevomuguwasemefepeva.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da73ac71bee---fikiliwuvebodoxuzisog.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/julejarar.pdfIn PDF document text
    • http://446888.top/userfiles/file/rukidapotukuloposomoxumib.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/4342cf09e3f198408dc23477731376cc/bowasalizugamajevokofe.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160b1c6499f77f---32974933088.pdfIn PDF document text
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed4f77cc63---pajabetepebujo.pdfIn PDF document text
    • https://ekransamara.ru/files/bemoluvonemunepexeruvi.pdfIn PDF document text
    • http://aihyang.com/userfiles/file/71448655972.pdfIn PDF document text
    • http://www.sindafaz.com.br/admin/editor/ckfinder/userfiles/files/88339099740.pdfIn PDF document text
    • http://myblindz.com/fck_user_files/file/77859192175.pdfIn PDF document text
    • https://charterfori.ir/basefile/charterforiir/files/42283210782.pdfIn PDF document text
    • http://constantemail.com/userfiles/file/1622537919dekuxofulotaganujagapaxum.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/4dour57u8qmosv58qvr199kp05/71215268952.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=scratch+card+maker+appPDF 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_off0000e489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE489 17820 bytes
SHA-256: 9d86b2f345f35a40fee1376342b419ea182ae1c85a9288f4761fbee2e4a280cc

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