Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9966627d590fc9a…

MALICIOUS

PDF

42.9 KB Created: 2021-09-03 20:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: aab67211e1d2d1653de94f88fa7ddc9b SHA-1: 072357af6cfeaf4f0b9bd0ed7af5d2401a506fe2 SHA-256: b9966627d590fc9a747f12f0f132aea314813d2b7d2b3f2b801bb79f3c7dd522
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by multiple heuristics and ClamAV, indicating it's a phishing or malware delivery attempt. The PDF contains embedded JavaScript and presents a link farm pointing to compromised CMS upload directories, suggesting it's designed to lure users into clicking malicious links. The document's structure and size are typical of a screenshot lure, where a full-page image hides clickable elements.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7092

Heuristics 7

  • 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 42 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d950761461---39237051669.pdf In PDF document text
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160712ad39d01d---sotojiruramogazuwafelig.pdfIn PDF document text
    • http://reunionclass.com/clients/7469/File/libotuxi.pdfIn PDF document text
    • https://mimpishio1.com/contents/files/gisemasuduboziz.pdfIn PDF document text
    • http://cermak-expo.cz/data/files/file/64231723731.pdfIn PDF document text
    • https://nvsrolko.org/ckfinder/userfiles/files/91045139050.pdfIn PDF document text
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/a52rju2j75h5qu43schkrf17b2/87140935158.pdfIn PDF document text
    • http://studiotecniconuti.it/userfiles/files/52696121353.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9173f66932---fujeduzamadalaxexutujaku.pdfIn PDF document text
    • http://amandamaitland.com/images/file/jubenabejubobivujituf.pdfIn PDF document text
    • https://getadoc.in/ckfinder/userfiles/files/nugipimafolifukivirunez.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0e4967dce8---62679886958.pdfIn PDF document text
    • https://smaransaving.com.np/ckfinder/userfiles/files/5941297700.pdfIn PDF document text
    • http://baheth24aqari.com/ckfinder/userfiles/files/zapugimedasekokolewuno.pdfIn PDF document text
    • http://suachuaspa.com/upload/images-content/files/nanunowemovonovevovaju.pdfIn PDF document text
    • http://bedrucken24.de/userfiles/file/vomifaji.pdfIn PDF document text
    • https://oversaslogistica.it/file/8880911527.pdfIn PDF document text
    • http://factory-01.com/js/upload/files/68248937905.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160f036442c891---seninabom.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160ecaadb4d5d3---bozip.pdfIn PDF document text
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/d4f4ca1368f8efa35200cdde1c980de6/40185081979.pdfIn PDF document text
    • http://geonatlife.es//ckfinder/userfiles/files/rajasijipikapawipusuluzu.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5203f9e763---besozoruvupefogiforisoli.pdfIn PDF document text
    • http://booklandbooks.com/userfiles/file/70278737067.pdfIn PDF document text
    • https://sahodayabbsr.com/test/fckeditor/file/79165848910.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=introduction+to+the+internet+of+things+and+embedded+systems+pdfPDF link annotation

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