Malicious PDF — malware analysis report

Static analysis result for SHA-256 d498f6090bf910f2…

MALICIOUS

PDF

54.6 KB Created: 2021-08-02 05:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 61c72c7bf3106b6dbc8630d85019b386 SHA-1: 6939ccb344879a5c04df6166a202a3378afe67a0 SHA-256: d498f6090bf910f2368b19e66cfc3fa2b6817f00131223ad74fb7c25721baea6
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting an attempt to lure users to malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. While no scripts were directly extracted, the PDF structure and link farm indicate a phishing or redirection attack, likely serving as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5305

Heuristics 6

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/45ec731085ea22aeea66edbd13f039ef/53439442543.pdf In PDF document text
    • http://yevres.fr/ckfinder/userfiles/files/18503884909.pdfIn PDF document text
    • http://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1ea252433c---gojamedusib.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609f65532bff0---98304198685.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/7165ec68cd5b970d31d8ace86a3e06e4/98426877608.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ea170d226---texobemux.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/51883499439.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/afbc3aa665512a266053c7d388b5420b/2957675505.pdfIn PDF document text
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b8167bb33---muxoladunifozatoturuxe.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/31338887157.pdfIn PDF document text
    • http://ciaooo.ru/uploades/userfiles/file/fafifozisep.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160fe52c9ce671---96334729874.pdfIn PDF document text
    • http://superfishinglewood.com/uploads/files/gizarobor.pdfIn PDF document text
    • http://sweetbasketsbyjackie.com/clients/864293/File/tolakadopalapefiwa.pdfIn PDF document text
    • http://robedecreateur.com/img/files/88958619428.pdfIn PDF document text
    • https://ktmcollege.org/public_html/userfiles/file/88471745345.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/d0b016794ad872a9c1d6a9498f82e999/borala.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/h2n8c6imr42n4gdir830g9d79f/1200157685.pdfIn PDF document text
    • http://taiwanglassgroup.cn/userfiles/file/wezixejoselumuj.pdfIn PDF document text
    • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffdcb19e54---11866230290.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/528c3136ffe42f640da5b01405a7e727/guwiwav.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2b41a67865---6489068702.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f010cc6a5d9---nofomijaxaguwewewumofor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=bergey%27s+manual+of+determinative+bacteriology+9th+edition+onlinePDF link annotation