Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a993a2fa29ad211…

MALICIOUS

PDF

86.5 KB Created: 2021-07-24 06:45:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d57a9d47577676442618a1774681afe1 SHA-1: 7bed19da2a0fe5e6fc6ac11f4d67dd5a38ee375c SHA-256: 6a993a2fa29ad211539fc9aa6972ffac28374deec8217382c8e2ff7039ab632f
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to multiple external websites, some of which are hosted on compromised CMS platforms or disposable domains. The presence of embedded URLs and the structure of the document suggest an attempt to exploit users through deceptive links, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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 http://zkmeiqi.com/admin/ckfinder/upfile/files/19403072292.pdf In PDF document text
    • http://elmbbq.com/uploads/files/25144399496.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608762a45767c---jadedamopozatap.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a1bb21031b4---pididuwigevurobe.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/daaa7711d4b6a80c24aa13d61bf01540/patovuzon.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/955ng7c15ub7uejt2ne3t4jqv7/61834275214.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082613dcb917---kefivusabaxajaze.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160be44f37abd6---11287953906.pdfIn PDF document text
    • http://taborcapitalpayment.com/clients/d/d0/d0a3925ee25d0adc8806453b18bccccc/File/55992207035.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/i41t61hs5tac0ns3s6dse3ito2/49209731148.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/4577b4aaa51c7c71ed4ee47b4281fe6d/36718058867.pdfIn PDF document text
    • https://adsbudget.net/userfiles/file/tetuluvazafoxuzafegezilik.pdfIn PDF document text
    • http://augustaelectricalwork.com/editorData/file/tutusif.pdfIn PDF document text
    • http://catgarner.com/clients/873270/File/sigiz.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/dubasuwami.pdfIn PDF document text
    • http://www.anclupnapoli.it/userfiles/file/75077824582.pdfIn PDF document text
    • http://centrons.com/uploaded/file/151522740660c95bda24d7c.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/4637123712.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/2lhspnslbc7ed4t4uo1e1ajnp6/powumaxubapuzowavonukuf.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/73302730743.pdfIn PDF document text
    • http://kolesnikov.pro/ckfinder/userfiles/files/54298914572.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a8741496ebb---sinabatugomusu.pdfIn PDF document text
    • http://candientu24h.vn/webroot/img/files/wajupufusitosopaz.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/votolivupuv.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6e07565635---rafataruzelugavejolum.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=lucky+money+app+cheat+codesPDF 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000107a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A3 10804 bytes
SHA-256: b041a7c20a01163517c263c9ce61750c75790bd2f3ece16981b38885f35524b4
font_02_sfnt_off0001206f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1206F 16880 bytes
SHA-256: cbda9906a79953f0f9bc775ade674e46026ac4de5aafb4b4206c343724f80fcf

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