Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8a0e0a00c91238d…

MALICIOUS

PDF

62.2 KB Created: 2021-08-15 23:54:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: ac8cfbb5e50f0c563bc99bbf88fe088c SHA-1: 48cf2209511d401e8053f273fe9932f631355e5c SHA-256: c8a0e0a00c91238df2286f4632dcb5db0cf8e7f2e95f431179e06adbba3a89aa
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised CMS upload directories, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the structure and URL patterns are consistent with malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8471

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://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c183a0704f5---61384605335.pdf In PDF document text
    • http://baracenter.be/userfiles/file/56126299888.pdfIn PDF document text
    • https://vvpta-irvine.org/userfiles/file/9869075262.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/ue0oeainfkqc3tpl2id3k1lrs6/52667999300.pdfIn PDF document text
    • http://xsteelstock.com/d/files/66505370506.pdfIn PDF document text
    • http://kapfenberger-schuetzenverein.at/userfiles/file/tekeluxino.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e5ffef1e865---xedezopegibavibipuxixarij.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/3f50k17rtpq2ss6n00r3an1cl4/37698444086.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/7rr8btgvk77oudq4trd7gavoeu/79943960086.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100a952be866---fokutof.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7bd1e68467---47857432689.pdfIn PDF document text
    • http://rocincorporated.com/domain.com/images/dynamic_pages/file/xazisotewudufamogula.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ab8db0e5140---savuzemunojo.pdfIn PDF document text
    • http://jonme.net/ckupload/files/galotulavikotixoroxukili.pdfIn PDF document text
    • https://taichielite.com/louis/taichi/ckfinder/userfiles/files/24138872066.pdfIn PDF document text
    • http://studiopol.com/userfiles/files/sadikifinuz.pdfIn PDF document text
    • http://qhzs88.com/admin/fckeditor_upfiles/file/2021081601383380554.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afc67e2fbb1---96368122241.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1607bb1bf134f4---sopekanusedimidedozamaduz.pdfIn PDF document text
    • https://jaukiaplinka.lt/ckfinder/userfiles/files/muzilopijadux.pdfIn PDF document text
    • https://fajanav.com/aym_image/files/dodurefelilakama.pdfIn PDF document text
    • http://claudiodauelsberg.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c4e998b01ab---rititet.pdfIn PDF document text
    • https://drainscovers.com/wp-content/plugins/super-forms/uploads/php/files/838fe905bd837317e7cfd4e2a75d0e73/nifepobugudepazijinel.pdfIn PDF document text
    • http://manninareunion2012.com/clients/0/03/03b30fdf9aaeeba733afadbef254ff7b/File/mutawupuwimarip.pdfIn PDF document text
    • http://kamkmori.cz/ckfinder/userfiles/files/56446075037.pdfIn PDF document text
    • https://bataretak.com/img/files/file/81194789085.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608c7a995ff4a---tufinipimawisilis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=traffic+rider+mod+apk+hack+version+downloadPDF link annotation

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