Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ea647acaa99814…

MALICIOUS

PDF

88.1 KB Created: 2021-09-01 01:34:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: de00f15d23de3da57b5f5a7be23fd427 SHA-1: 3bfec7dfdce0d12b70997bafc1327ce0762c703d SHA-256: b2ea647acaa998149abc5e311cb1408cf79cd774ea62920bd2e343ee256abfbe
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on compromised CMS platforms, indicating a link farm or distribution mechanism. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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 http://thomasbelldescendants.com/clients/40432/File/fituder.pdf In PDF document text
    • http://world-green-hope.com/uploads/files/buvudipevuzifigexozetosep.pdfIn PDF document text
    • https://lanna-flyingclub.com/ckfinder/userfiles/files/miwanepexojezi.pdfIn PDF document text
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/f4ab09d8d058adc0513d66f61c4d7a40/32438244839.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a6b2427c4da---zaxaxoluw.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/067b1fb8964dcddc46412448c13a533d/zixofuzazowajidogexobabu.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/2qmagib43s26pkhh0eauacg1p4/jileg.pdfIn PDF document text
    • http://bbdecontra.com/userfiles/files/49839047778.pdfIn PDF document text
    • http://safetyassessmentsolutions.co.uk/ckfinder/userfiles/files/8975930016.pdfIn PDF document text
    • http://aiaato.com/FileData/ckfinder/files/20210625_53296D822A49FCBE.pdfIn PDF document text
    • http://tznjl.com/userfiles/files/jawatirux.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606ebaba31a65---ranakulokexujazaxerasopi.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b28eb57dc9c---56870285377.pdfIn PDF document text
    • http://personal.sut.ac.th/chantira/port/ckfinder/userfiles//files/dagagafijukenugu.pdfIn PDF document text
    • http://at2apigroup3.com/contents//files/94594124797.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160733eb78b4c3---zitexasu.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/26064749868.pdfIn PDF document text
    • http://reafamily.lt/ckfinder/userfiles/files/bugapazopumatunenevuj.pdfIn PDF document text
    • http://monktonlionsclubkidscamp.com/clients/9/99/99b8b5517e5fb663501b7ee5137ebf55/File/69393433946.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/990569f533b1308257aaa4d5a58474bc/vikopofujemuzok.pdfIn PDF document text
    • http://hargrovefamilyreunions.com/clients/16272/File/sitazama.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/ptdo354hhk3j6a4u8jhqmh8oag/87324961120.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/35453007680.pdfIn PDF document text
    • http://epodhajska.eu/UserFiles/File/18328449274.pdfIn PDF document text
    • http://oikoscoccatoarchitettura.com/userfiles/files/1913533881.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070525224062---39399189820.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=pokemon+emerald+how+to+get+surfPDF 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_off0000f111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF111 10988 bytes
SHA-256: 19d786f9e86090cb6d71a1ea647434c7008f1a226fa406be9bced33eb0cf9a3b
font_01_sfnt_off00010a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A45 18372 bytes
SHA-256: 721463ebdb8fec6af82cee84a4918f8b887568d0bf7267729d379ba163b3cb25
font_02_sfnt_off00013a35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A35 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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