Malicious PDF — malware analysis report

Static analysis result for SHA-256 0deb4b4a3bed4465…

MALICIOUS

PDF

41.6 KB Created: 2021-09-04 21:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c0a1a67a2354b30b97cab26091a55342 SHA-1: 425001b84185d5e4504498168c160b42bdb11c65 SHA-256: 0deb4b4a3bed4465122bbb38cfce88550937be5c758e43f00065d79081864eb8
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and is identified as a phishing lure by heuristics, suggesting it's designed to trick users into clicking malicious links. The presence of multiple links pointing to compromised CMS upload directories and disposable hosting further supports this. The embedded JavaScript likely facilitates the redirection or execution of a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7526

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 41 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 http://jevades.com/aircraft/fckimages/file/24517299124.pdf In PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/2d08fe0bb1c35d549c04d01ab49680d4/guxowet.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076e10db3f47---26085223889.pdfIn PDF document text
    • http://marinda.ru/pics/images/file/4773318863.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ffd59045efb---18998112368.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/3217364ee5093f0f670e5da7fbbbc978/90657163440.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/1612bb1c2ad797---29359324876.pdfIn PDF document text
    • http://kaizousha.com/js/upload/files/12806278480.pdfIn PDF document text
    • http://www.derbysignandgraphics.com/uploads/file/81801918490.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/8rc87ifo64v6i2b8fiqao3qe63/kamuwijisijize.pdfIn PDF document text
    • https://penal-garazh.ru/files/10716072442.pdfIn PDF document text
    • http://sanmorales.es/userfiles/files/72054958644.pdfIn PDF document text
    • http://iberryhomemade.com/userfiles/files/75209934682.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c47e140a88a---5687637348.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/7dd4eccff07f3ff021e8889132c0bba1/51154775791.pdfIn PDF document text
    • http://sensitiva.fi/UserFiles/File/801869074.pdfIn PDF document text
    • http://wjcopy.com/upload/files/76560998992.pdfIn PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/zivazuzijafobinalo.pdfIn PDF document text
    • http://studio-orlandini.com/userfiles/files/ropixalegajugarorivizoru.pdfIn PDF document text
    • http://gpshardorawal.com/hemkunt/userfiles/file/74308198455.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/67762094873.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096c5fac00fe---dodogagino.pdfIn PDF document text
    • http://ceresasrl.it/userfiles/files/kidapotanu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=xslate+r12+manualPDF link annotation
    • http://perfecturology.cafe24.com/upload/editor/imagefile/15982457314.pdfIn PDF document text

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