Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0c2e2619c47e412…

MALICIOUS

PDF

84.5 KB Created: 2021-08-21 08:57:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 8f2cc6064198ae60361d0146691b7f7c SHA-1: b0dff877d6eb4cc2c2a5f80770a97187452a32fa SHA-256: c0c2e2619c47e41295951b45a32694d1b519c4686c4f8173caa7216613c30ba5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites and disposable hosting, indicating it functions as a link farm. The primary goal appears to be directing users to potentially malicious or phishing content hosted on these external sites.

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 https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/510725cc039ba8837b7dd70a7ba7a48d/51283919725.pdf In PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/2c0fd72531e329c4a78d0d573a6ba501/gavodemen.pdfIn PDF document text
    • http://taxilitomerice.cz/ckfinder/userfiles/files/viwivetonopunusox.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/jijazekono.pdfIn PDF document text
    • http://studiotecnicodama.it/userfiles/files/35318687406.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e6121dc18---mujidu.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/19247295b2dbf30811ae0621f3e71c6c/limedoxamofosuxa.pdfIn PDF document text
    • http://lbhs1965.com/clients/6/6b/6bdd8f708684a1f547efbf97e1630fe5/File/73054380251.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c2f1ea7a42b---komepefubapabidowap.pdfIn PDF document text
    • http://sochi-riba.ru/ckfinder/userfiles/files/navitemamokidusike.pdfIn PDF document text
    • https://benqmusicworkshop.com/fupload/file/23300604970.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/jjjuh723jco5emqlent6k7kuu6/21768390784.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/majeduregikobetokeziwogo.pdfIn PDF document text
    • https://btcauction.vn/hinhanh/file/saduwazigibuxodetu.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092d2331e2f8---71054850134.pdfIn PDF document text
    • http://kcobafl.org/ckfinder/userfiles/files/51760965385.pdfIn PDF document text
    • http://brezov-gaj.si/uporabnik/file/92985086503.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/1e94c2ad67b24ce9aaee74dc73bccc09/wosefizodirikatuvok.pdfIn PDF document text
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/d84a742f96ecce1c430dcfc300c37f17/lubezoguwilojajuzavilef.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/00dac53bdc9f40de685626468cf8c925/54583625000.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a2eea097e24---safuzedazomuwex.pdfIn PDF document text
    • http://brickchamber.com/ckfinder/userfiles/files/zupulikela.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/olpkdqv44h44ad0fkgqh7tqgs1/pabufit.pdfIn PDF document text
    • https://investainternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a1e827c680---14707570688.pdfIn PDF document text
    • http://cokhiminhhien.com/media/ftp/file/ratatubafuzezowavujin.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608f67f7d186a---67985449503.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=libro+comportamiento+del+consumidor+hoyer+macinnis+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_off0000e415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE415 17916 bytes
SHA-256: 7bb94bfbc33191def5ef27f28a226cc3e41086a47411c2271818a9f6ab040f33
font_01_sfnt_off000111c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111C6 11196 bytes
SHA-256: 64d256ecfc6ba6fec10d2a3911fb05fd7d7531264c8314f69e5f384f8c28f797
font_02_sfnt_off00012b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1