Malicious PDF — malware analysis report

Static analysis result for SHA-256 6beb6a1532abe7f7…

MALICIOUS

PDF

90.2 KB Created: 2021-08-07 03:15:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7659ea6e8615b0724609c5dbf5d27b3d SHA-1: b73f3d12891a4bf17eb062f79070e4be1422226c SHA-256: 6beb6a1532abe7f74376dc4f0414a04c5085e3fb00dcd76e8eb99e62f8402a7c
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised or disposable hosting. The presence of a link farm and the ML classifier's high confidence score indicate a malicious intent, likely to redirect users to phishing sites or download additional malware. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://kme.pl/global/app/webroot/uploads/file/16267257853804.pdf In PDF document text
    • http://keacg.com/upload/files/namimutazagi.pdfIn PDF document text
    • https://ataru.site/js/ckfinder/userfiles/files/2371407812.pdfIn PDF document text
    • http://valifyrepapillon.com/clients/6/68/68e1c6a84db99a04c21676ff826d6e37/File/84057709635.pdfIn PDF document text
    • https://dascalita.ro/app/webroot/files/userfiles/files/fugokojogutezemaguvek.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/2nhj0cik48k7s3c81jjnu0mpfe/pepuzutozuvavinenibew.pdfIn PDF document text
    • https://aimara-bg.com/userfiles/file/vuxoz.pdfIn PDF document text
    • https://bdsvieclam.com/upload/files/gebepajowibupuvotibab.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16104f2e8ccb64---36331268849.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/nko6hdp2lkioqasv5oekqp2p9h/buzina.pdfIn PDF document text
    • http://www.predoisiasociatii.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160769b6e8021d---nezamedofodoratazokejido.pdfIn PDF document text
    • http://tcsm62.org/uploads/news/file/wewesavotedek.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/0selu8tfd8djvu7botn1ur10m4/23096669855.pdfIn PDF document text
    • http://adamslakeband.org/userfiles/file/30515501177.pdfIn PDF document text
    • http://weilandensemble.nl/ckfinder/userfiles/files/85711486597.pdfIn PDF document text
    • https://esterkins.de/ckfinder/userfiles/files/mosexerekekim.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609867c2e71c8---lutusarisewepiromesegu.pdfIn PDF document text
    • http://mmckno2010.zkosuchdol.info/files/82165792643.pdfIn PDF document text
    • http://akcihlar.cz/userfiles/file/60334510260.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160aad1ffe24dd---25356051152.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/nd1k3lf6qnsh4cs1rtnl8qj716/nokobanatika.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/matezejepurobelu.pdfIn PDF document text
    • http://yasaitogo.com/uploads/files/sugepidibano.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/2768673d77030b40ddbe2e05f3e68571/14266427240.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/9bc03cdd0c6c1f489105bff4ec8cdb9b/2394983406.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=download+the+sims+dinheiro+infinito+apkPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF346 10940 bytes
SHA-256: 35e6d43b743db3578af9ab59e28b36b12652491e7fa1940d2deccc36398e8312
font_01_sfnt_off00010c70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C70 18336 bytes
SHA-256: 7e43abca48e095b56861325fc00c7dafa9d84c8b70f9d1fcf6a20bc76a71dfd3
font_02_sfnt_off000139d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139D7 1672 bytes
SHA-256: 3f1748778f03e7b7e2d3a6c88ca15ef060a02f224cd71155e662fde9dd4c56c7
font_03_sfnt_off000141c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141C9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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