Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b06a58d92eadee…

MALICIOUS

PDF

94.4 KB Created: 2021-08-12 12:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: ce07a44302602fbd4bd881eac1d572f9 SHA-1: e392e9c9eca501094fe47ba6bb0c7a67b28cb476 SHA-256: 60b06a58d92eadee9053ab303ea4c76b7f2db5d6e9b4fcf0816005c6b470ae74
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites acting as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for executing malicious code within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

Heuristics 7

  • 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.
  • 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://pistant.ru/uplcv?utm_term=vikings+season+6+episode+2+plot PDF link annotation
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a2cf422479---jegazawivi.pdfIn PDF document text
    • http://xn--zb0by3yusal20ak5lcidnwigi.com/ckfinder/userfiles/files/1626216662.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210508211602188.pdfIn PDF document text
    • https://orderpoet.com/ckfinder/userfiles/files/jisisusinativakedofikos.pdfIn PDF document text
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/4ee26cd418bea64d6c6e1b68857140ca/73446797363.pdfIn PDF document text
    • http://wolfpackbasketballacademy.com/content_docs/voliselojujofepow.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1607d583cf41b2---lodiguvigobunisaga.pdfIn PDF document text
    • http://mundori.com/js/ckfinder/userfiles/files/84315847402.pdfIn PDF document text
    • http://raczcsalad.hu/files/bifinadetoluzavemos.pdfIn PDF document text
    • https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/71e11d203205240738397e14d3fd804c/xugixi.pdfIn PDF document text
    • http://pratiklinik.com/img/userfiles/files/solubikawofejotot.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/c7ad6401ce4e38b5b63dd6d6bc29f404/35569997766.pdfIn PDF document text
    • http://fitnessklub-impuls.pl/uploads/assets/file/37077479038.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/xebinotamaj.pdfIn PDF document text
    • https://gyn-koe70.de/obrazky/file/16793607970.pdfIn PDF document text
    • http://ohana1bbq.com/uploads/files/37753112576.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/b24059db92b3b9caef2204fe38407ea1/93426618944.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c53006d2810---tavilunalawuroduminagili.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/futiregasupag.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a3f1a73caec---varepetitavibuw.pdfIn PDF document text
    • https://a-1commercialkitchenservices.com/ckfinder/userfiles/files/34917544699.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b2d33ddabe5---zoragirasi.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/icdrmr24t80tenmr489ptqb5n3/64222219771.pdfIn PDF document text
    • http://studiogeologicotrilobite.com/userfiles/files/65413088331.pdfIn PDF document text
    • http://flambotour.it/themes/userfiles//files/jowegodelubepowobumagevot.pdfIn PDF document text
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bfcf22493bd---54169411519.pdfIn PDF document text
    • 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_off0001080e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1080E 18080 bytes
SHA-256: a601d6c9c8ae6f03fe77c57f7f9ade9c0c3808a08fd166249dd2de6ba3350c9a
font_01_sfnt_off000137fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137FB 10816 bytes
SHA-256: 0e1dce728db632e8dd537281ef6629ecb46001211e29b590c9ade9618a9fce23
font_02_sfnt_off000150ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150EC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1