Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b46400e2eadd10…

MALICIOUS

PDF

78.8 KB Created: 2021-07-25 01:16:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: dc7b4e3cf86704487930238629591cc4 SHA-1: 7d224757bcc0d32be79201f436a042b7f5da3da0 SHA-256: e0b46400e2eadd10f9e24d813884364f09eeb8cf2ef5c5cb70c2e81f60a049e3
156 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of a link farm suggests the document is designed to redirect users to potentially malicious or phishing content, rather than providing legitimate information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a25a4797ee8---36852164202.pdf In PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/16073e64cadad9---95287997863.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607871d3394f5---zimawewidamati.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/dk27lqrj23mrhcpckv2lmltuo8/54368809815.pdfIn PDF document text
    • https://ddshower.com/ckfinder/userfiles/files/68379025251.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/92453219435.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/5b38c7530de3f690440076671f921dd7/44265615115.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/09e9eb6414169bea39fe2ae268e23f20/1943966663.pdfIn PDF document text
    • http://designklasse.de/ckfinder/userfiles/files/38076129633.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/124d80e062d364c6a556dccfe2de6a9a/24776595506.pdfIn PDF document text
    • https://avgdesign.com/userfiles/file/93570706789.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16088b00fdcc37---7333080641.pdfIn PDF document text
    • https://meesens.be/KrMee/Tekstverwerker/xazolixegob.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f3157237d---99775946911.pdfIn PDF document text
    • https://upchealth.net/wp-content/plugins/super-forms/uploads/php/files/7f5225b7f379ce08ebe954c1077f3750/polujubinudomal.pdfIn PDF document text
    • http://penzionklara.cz/userfiles/file/8531659021.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9d920c4c1---xetupu.pdfIn PDF document text
    • http://backkwang.com/userData/board/file/39733432389.pdfIn PDF document text
    • http://landpas.pl/upload/file/20864165127.pdfIn PDF document text
    • http://gospel-pour-100-voix.com/fichiers/newsletter/file/parosekibasarevusofa.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/d8dfbc8d230c94a96763a346649b2186/xapagogulutititutukuvope.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3895385d8b---65691552942.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=you+can+heal+yourself+louise+hay+pdfPDF 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_off0000ce91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE91 10816 bytes
SHA-256: 991e0167e4ae6fb3e8a683b681b27a42427d81202f64e498420c92e79ccdf731
font_01_sfnt_off0000e76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ff7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7F 17360 bytes
SHA-256: 23725a7b197ab13714e1043f9660fd1a8bec8fe19f6816811aa73042a4604d92

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