Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf6dc51a42e63eb…

MALICIOUS

PDF

83.6 KB Created: 2021-07-20 15:52:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 132f49e4961f69a8240ff2f77d7b2d68 SHA-1: 68000f25eecb7858f3dca471f85549651691d9ca SHA-256: dcf6dc51a42e63eba2a6453751724f84d3d787ea39f162328dd9e740729fc92d
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links, many pointing to potentially compromised WordPress sites or disposable hosting, indicating it functions as a link farm. The primary purpose appears to be directing users to external malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://codemessaging.net/ckfinder/userfiles/files/35952591095.pdf In PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/2750176770e6f6079c75044197da48ae/51176027405.pdfIn PDF document text
    • https://baoholaodong24.com/userfiles/file/xodik.pdfIn PDF document text
    • http://liebherr-tr.com/userfiles/file/71006115483.pdfIn PDF document text
    • http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607a94a5dc80a---xukiwijesafatinibe.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c45ed334e1a---vaxosejaxiranafev.pdfIn PDF document text
    • http://antifftech.com/uploadfile/file///2021062215022165.pdfIn PDF document text
    • http://greer2001.com/clients/e/ea/ea56749d84c1a2d7db36d2c51c833a37/File/fejunoxibopuvozuba.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096b674265a8---memebafunut.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1606f662293d8a---51139775123.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/6t6168e7u4k2ie8grfncnndpnp/75293067433.pdfIn PDF document text
    • http://www.contal-farmer.com/uploads/files/14637023725.pdfIn PDF document text
    • http://lafenicealcamo.it/userfiles/files/8701574783.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/d17dea311f922805992cd197518ab461/42884358544.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/41717525486.pdfIn PDF document text
    • https://repare-ton-smartphone.com/userfiles/file/ganosevijubuvipirapadum.pdfIn PDF document text
    • http://artecgroupservices.com/imagenes/file/losipunojoripo.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/3f9acedc91e0e418218811687b30eefc/fujofovusi.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/75180f0544df171fcc44efa269c285cd/43879768460.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/uj10rute0e7hg4h9uc9l1dru43/85673293186.pdfIn PDF document text
    • https://ecohort.info/userfiles/files/79274147155.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609df37c9d66b---14365028886.pdfIn PDF document text
    • https://marljivo.hr/userfiles/file/rexemigedijavuvaragasidul.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aad16575050---24002672327.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/37362190146.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=international+space+station+nowPDF 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_off0000e50b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE50B 10404 bytes
SHA-256: dd6b2a43d391c16a852204ff955705b778f47c225af95d2bbc915eea72e9b5c8
font_01_sfnt_off0000fcc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCC9 17092 bytes
SHA-256: e6db14d68a349fa2d45dfaf43fe40d1406f9266cf2153533a9c155d24cea01a3
font_02_sfnt_off00012913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12913 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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