Malicious PDF — malware analysis report

Static analysis result for SHA-256 201c49a25ce6b385…

MALICIOUS

PDF

98.1 KB Created: 2021-08-18 20:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: be20146b0aed640cd85e0a3a2c611b1e SHA-1: b7e3de31ebcf8c6a92ee10e4b61e00e8b16aceb9 SHA-256: 201c49a25ce6b3858f9ddac075beaee5d25686accb1e44ceccfbea8ab51916d9
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains a large number of embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm or phishing lure. The primary goal appears to be directing users to external malicious websites, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9937

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://crysiq.ru/uplcv?utm_term=monthly+home+budget+planner+excel+india PDF link annotation
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8dd72e0925---zomimajafegekor.pdfIn PDF document text
    • http://youngshiny.com/userfiles/file/1621310079.pdfIn PDF document text
    • http://kovacsoltvaskerites.hu/images/file/4168602832.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/gixapufepebuzip.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9973a9f61---suwozivifumozobupivugos.pdfIn PDF document text
    • https://ecodiagnost.com/ckfinder/userfiles/files/viminarapedinok.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16071e3dac22e5---bevefebotopot.pdfIn PDF document text
    • https://tkquiz.com/userfiles/file/43164674687.pdfIn PDF document text
    • http://www.39koratmachinery.com/file_upload/files/kikadajaxomapisomutumulon.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160f88360aaf17---99485110520.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/fa3c63fbbb1d9fe1d1e23fddf9be71ad/loduwexe.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/4rj17ihbdqrtnmbu2ernl303bi/66001978521.pdfIn PDF document text
    • https://dailyiat.com/html_upload/file/mezovugitopeni.pdfIn PDF document text
    • https://purevdavaa.mn/uploads/ckfinder/files/sajejexusu.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/db9064c801d1fcc48973d324850b3c23/difizazevogutunefugodasu.pdfIn PDF document text
    • http://emotionpicturesfestival.gr/userfiles/file/52900428311.pdfIn PDF document text
    • http://stroisvias.ru/userfiles/file/vovowutujok.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/jiturudanejojusokebelapi.pdfIn PDF document text
    • http://gintaras.cz/userfiles/file/67227892841.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160922eeeafc8d---25236036688.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/tijeneralekatixigidizet.pdfIn PDF document text
    • http://thrifty-uy.com/files/others/76835473253.pdfIn PDF document text
    • http://dienvietbac.com/uploads/files/19744339456.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/bibezof.pdfIn PDF document text
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160799a9aa7630---fuvifapa.pdfIn PDF document text
    • http://ambulatorioveterinarioilprato.eu/userfiles/files/70654282320.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/e70b77df1d8cd3b55b3468cf9e788403/56765801601.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_off00011bc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BC7 16892 bytes
SHA-256: a172e07452847a280dfb6da83052ad4f27330b95e86020794d320d271a213733
font_01_sfnt_off000147f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x147F7 11240 bytes
SHA-256: 76ec140acb9ca3292a7bfc8be91aa7a8ab9ee74db6d3480203a51b81302f7bfd
font_02_sfnt_off000161b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161B5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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