Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f56dac5c342255…

MALICIOUS

PDF

70.3 KB Created: 2021-09-05 05:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 51d3c594c163d5cc3c3cbda7ca376c46 SHA-1: 13008bb7a72752804ebfc017c25f2cc0e8f5b1dd SHA-256: c0f56dac5c3422557df09f3ed9e025f15803c368a541ef232cbe25db9a30b500
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to various domains, many of which are identified as link farms on disposable hosting or compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution through these links. The document body is heavily obfuscated and unreadable, providing no further context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6398

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://akproauto.com/nbloom/fckuploads/file/bopovidajewasonenubiwix.pdf In PDF document text
    • https://burgaseguros.com/userfiles/file/87833118536.pdfIn PDF document text
    • http://df-2.de/images/daten/file/30227249038.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/bonumed.pdfIn PDF document text
    • http://bogelaipigeon.com/upload/file/28054830351.pdfIn PDF document text
    • https://asharfilalkulfi.com/ckfinder/userfiles/files/rejed.pdfIn PDF document text
    • http://best-infosystems.com/userfiles/file/46276214688.pdfIn PDF document text
    • https://papiratisk.cz/soubory/xawixa.pdfIn PDF document text
    • https://www.zaantraining.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16081f569d9f5f---vexotanomefubonuru.pdfIn PDF document text
    • https://kenadong.com/contents//files/xotufopixonito.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160876cffed14b---64360182443.pdfIn PDF document text
    • http://plafondchauffant.fr//img/user/file/92903496307.pdfIn PDF document text
    • http://logistra.fr/ressource/site-image/files/vovoj.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095b023045e0---35035088237.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609bcffdaf3c4---janagogulipabas.pdfIn PDF document text
    • http://laureysnv.be/uploads/files/69587527463.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/bokobojudakasisikuguk.pdfIn PDF document text
    • http://myucpb.net/userfiles/file/36781625426.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/juverubakawaran.pdfIn PDF document text
    • http://yaeram.com/userData/board/file/76558051974.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/wotisenixawu.pdfIn PDF document text
    • https://hitourkorea.com/FileData/ckfinder/files/20210603_57916BBCCF4A3A77.pdfIn PDF document text
    • https://actorconseil.com/files/file/bomodekopajirunulirilo.pdfIn PDF document text
    • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/160706a3ff32ad---58374967816.pdfIn PDF document text
    • http://joy05.com/_UploadFile/Images/file/vupulipimuxavinin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=chevy+3+speed+manual+transmission+column+shiftPDF link annotation

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