Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee696845f6e3a90e…

MALICIOUS

PDF

94.8 KB Created: 2021-07-15 09:33:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: fc9ccf9f526d35bc5fc1b547b7c9633b SHA-1: cbde2bff014a336bba7463bbd332749ba3184ad1 SHA-256: ee696845f6e3a90e49958ed6e0f709240e0c41f166b084b6810ea56538b55652
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other domains, likely serving as lures for phishing or to download further malicious payloads. The presence of external URIs and link farm characteristics strongly suggests a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • 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.
  • 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://wastran.ru/uplcv?utm_term=my+promise+to+god PDF link annotation
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/aec4069e73c63243fb57205d6733f416/rikoxusitozipujejiwe.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/da18c33d0f59cc04bdad368e39d700d5/leripojizebedogaveso.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f504cf9d1---xezisidapidovafixedo.pdfIn PDF document text
    • https://nmcs.ca/userfiles/files/fidorenisowavozekavafa.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/886072eaf2b9de8fd6fdd31796a01f30/28178368083.pdfIn PDF document text
    • https://cls-toronto.com/wp-content/plugins/super-forms/uploads/php/files/4b838cda9ab5f34a7c8a7db27cfab054/suzodogoxifekirixez.pdfIn PDF document text
    • https://easy2ticket.com/upload/files/83138579006.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160868f4759999---93953419897.pdfIn PDF document text
    • https://bhsbeacon.com/FCKeditor/file/zugag.pdfIn PDF document text
    • https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078aa88185ce---pisaxizijeposegilumisases.pdfIn PDF document text
    • http://phutunggiahungoto.com/uploads/files/lilor.pdfIn PDF document text
    • https://angkoronetour.com/userfiles/file/gesamifem.pdfIn PDF document text
    • https://mtmhomeschool.com/mycms/uploadedimages/editorUploadedImages/file/refidamuzosupofezuwo.pdfIn PDF document text
    • http://talani.nl/userfiles/image/file/rumodabisev.pdfIn PDF document text
    • https://autotrans911.com/thread/admin/uploads/file/97316361997.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/56530168216.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/67bd4c1e67308fea6a37fa4c62f23bd8/xupejotiwosemof.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/n0k7b55tb2bhip2as3ee48ttm2/mawigudisenu.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/94de6itfq94n6qoqubc07dugno/48475828781.pdfIn PDF document text
    • https://natatourism.com/userfiles/files/25912109566.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8e3e98cc0---50261264473.pdfIn PDF document text
    • http://quatanggiabao.com/images/uploads/files/763390314.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_off0001128c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1128C 10532 bytes
SHA-256: 0c45795ea36bcd7866d4da8f589971bbf6464638ab885392e36f402ad895ba6f
font_01_sfnt_off00012a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A5A 16804 bytes
SHA-256: dd24becb0f811ec518a1a6c725564725dd835fde2174eafc06c618b7f0cdc96b
font_02_sfnt_off00015623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15623 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1