Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5af5afe230c76e…

MALICIOUS

PDF

97.9 KB Created: 2021-06-26 00:15:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: c59cb7577fd3f6c45718f8f76bdb6aff SHA-1: 73854c362a12d08678394bf98079d3029c6e69bc SHA-256: 7d5af5afe230c76ec3ed312a249400fe1caf5f49b0d4674bcdb55e6368a85812
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/b72fc9db3b8e02d45a8ac7e3afa59a93/zebekoxobiginakebajapeze.pdf In PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9b86f1c96---gomuxijadatifubo.pdfIn PDF document text
    • http://fszhenjia.com/upfolder/e/files/20210530121627.pdfIn PDF document text
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/68724271872.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/00684f63e09a8c57f7addbd32f54fca0/gogabuledereponusum.pdfIn PDF document text
    • http://vinmexindia.com/uploads/zekom.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607d1bee5a658---3713450335.pdfIn PDF document text
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/rd9opvq85ueqh5np6mi6d0jc9f/laledumolapepuvoboj.pdfIn PDF document text
    • http://at2apigroup3.com/contents//files/82293839862.pdfIn PDF document text
    • https://sheenabusesandcoaches.com/userfiles/file/10077961581.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160817fcc69416---83326566164.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608a3185974fe---wukelajakekiwigigode.pdfIn PDF document text
    • https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/nluehq0lpvoq8g1usob31brqsn/dudiw.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/666c0f03c4d45518ecdb8a98d523f6fc/lezerifeganufeki.pdfIn PDF document text
    • http://cerescommoditiesltd.com/Images_upload/files/dulajixe.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e19c315b5b---telamexaxugudu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb79706542---xubuvawewugobisis.pdfIn PDF document text
    • http://skupka23.ru/upload/m/10849944096.pdfIn PDF document text
    • http://longvu.vn/Images_upload/files/67687686243.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4f06debe9---bodetirewunukuxovu.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/d0ff939aa6c8b638e08e58f10186dc6b/xixemagigufugavuvomu.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/lsdo1sp0r2n3qtrv5f8q7pmmco/femoripudadasag.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=i+have+a+dream+i+got+everything+i+wantedPDF 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_off00011ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000132cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132CF 10696 bytes
SHA-256: 78c3b8cdfa38c6b709157038bfcb4dbf9a4ec055d42fa143f2ba512c4f366c73
font_02_sfnt_off00014af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AF7 17740 bytes
SHA-256: ef0e10513a80775d165a9892f5db7e519be4ba0c558336e5d86e81f94d27054a

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