Malicious PDF — malware analysis report

Static analysis result for SHA-256 f37b7b9fc61baf9f…

MALICIOUS

PDF

39.0 KB Created: 2021-09-14 04:15:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 162252d80adec1385805f432eb9f5fcd SHA-1: 8ee013732914e55ef98504abc965885f72ef924e SHA-256: f37b7b9fc61baf9fc183201bd1f32607fb2ae2fc40e8997e72cf7605389e6666
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains an image-only facade with a click-outward action, directing users to a link farm hosted on compromised CMS uploads and disposable domains. The primary goal appears to be redirecting users to malicious sites, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8883

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 39 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/1a42ec0d3f6eebf5a3a24c05c17d1ccd/ximavuwamabumogobupem.pdf In PDF document text
    • http://mwcapital.net/ckfinder/userfiles/files/59066942462.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613576fc46980---20873028156.pdfIn PDF document text
    • http://meuble-tunisie.com/userfiles/file/mababugasab.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/33185973066.pdfIn PDF document text
    • http://www.deep2001.com/images/library/File/68998132355.pdfIn PDF document text
    • http://xn--hazrdner-r4a10d.com/alisveris/yollanan_resimler/file/46418968152.pdfIn PDF document text
    • http://austria-ex.com/images/blog/file/90692173864.pdfIn PDF document text
    • http://vetranhtuong.info/luutru/files/19712009650.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613afab71992f---kimebu.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/16135b5e625599---29663573809.pdfIn PDF document text
    • http://machin.kr/userData/board/file/sijotetezezupanunawerofof.pdfIn PDF document text
    • http://studiozoppini.com/userfiles/files/15063147530.pdfIn PDF document text
    • https://arte-salon.ru/upload_picture/pijade.pdfIn PDF document text
    • https://mayersoffice.com/userfiles/file/pupedo.pdfIn PDF document text
    • http://lightningriskassessment.com/ci/userfiles/files/kabefu.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/In PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=iphone+5+plus+price+in+bangladesh+2020PDF link annotation

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