Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce4c42f5565f60fb…

MALICIOUS

PDF

85.7 KB Created: 2021-09-17 05:03:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 5bd50d42043bdef8cadd6ab17f7de065 SHA-1: 786d693388ff44e0a9af7fb3040fc78f2ab5f0f7 SHA-256: ce4c42f5565f60fb4d9c613a4f915d692fe11270c6b96c74103b585576a12246
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing to numerous external URLs, with several hosted on compromised CMS upload storage. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL distribution suggest a malicious document designed to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://www.la-rocca.pl/app/webroot/files/files/37912746218.pdf In PDF document text
    • https://vieclamday.com/userfiles/file/relenikevujubilewamuja.pdfIn PDF document text
    • https://dodatkireklamowe.pl/web/uploads/files/42745950968.pdfIn PDF document text
    • http://live-net.it/file/59382208708.pdfIn PDF document text
    • http://wsm.hk/images/files/lenikezoxi.pdfIn PDF document text
    • http://lovepetclinics.com/file_media/file_image/file/78884840150.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1613004111869a---kuwosifixitokane.pdfIn PDF document text
    • http://kawana.tech/userfiles/file/35561526364.pdfIn PDF document text
    • http://iuf.kr/pds_down/files/23639126928.pdfIn PDF document text
    • http://gshosnab.ru/userfiles/file/fuxado.pdfIn PDF document text
    • http://cristal-in.fr/userfiles/file/vokakixanivilekozepemapox.pdfIn PDF document text
    • http://www.pattyn360.com/upload/forum/files/12586409222.pdfIn PDF document text
    • http://guoyangmoju.com/userfiles/files/61687755901.pdfIn PDF document text
    • http://allgeology.ru/ckfinder/userfiles/files/10657195038.pdfIn PDF document text
    • http://mevlanaasm.com/resimler/files/gusazemotawepeguzixutef.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613a19c0e94e6---xevilajijasufo.pdfIn PDF document text
    • http://theorientgarden.iorderfoods.com/uploads/files/74541552817.pdfIn PDF document text
    • http://www.thaitofu.com/image/upload/File/dutozeneb.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410f27a6b7e---runisa.pdfIn PDF document text
    • http://newbiesites.com/userfiles/file/fasepu.pdfIn PDF document text
    • https://polymadeniyaglar.com/fckeditor/userfiles/file/72752619130.pdfIn PDF document text
    • https://leganordavigliana.it/uploads/file/30409132658.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161334a7799801---54600099476.pdfIn PDF document text
    • http://cs-web-design.de/ablage/userfiles/files/remakozigokitiniwepemug.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/161374ce2463d8---logugoritogafosuzaro.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=kamasutra+book+summary+english+download+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_off0000e7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CD 17680 bytes
SHA-256: fb45dcfc83b5a24a64407f15bbf6da103c4659bfbb1d6beb89de5eb08c10ac9e
font_01_sfnt_off000115c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115C5 11468 bytes
SHA-256: 2de2472bf27cc5df2cf5bf1889c308108e5690e0c0d4a6980cc2e8b550daba85
font_02_sfnt_off00013056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13056 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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