Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c6ae8b70404f1a…

MALICIOUS

PDF

83.7 KB Created: 2021-09-01 19:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a9d6b27056dd68fecaab175ca1ef31b9 SHA-1: 6650d4337b74c9e70470fb617c7f75e22abc7386 SHA-256: 59c6ae8b70404f1acf4c310415a5908582df6895c0ddd7bd941735dccbcb71b6
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to compromised websites or disposable domains, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

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://pixomot.ru/uplcv?utm_term=scripture+on+nothing+is+impossible+with+god PDF link annotation
    • https://simplehome.ro/ckfinder/userfiles/files/43925036359.pdfIn PDF document text
    • https://dafelia.com/files/pejafafexopuwap.pdfIn PDF document text
    • https://toromecanicorodeo.com/files/kasixaxekemimipegiwebuxi.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a188a1a3312---mulenisutozezum.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/toch4n7rdu0p3sbb3qf87dtj1q/70582847195.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/kesosi.pdfIn PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607570e4315ed---99976770528.pdfIn PDF document text
    • http://xn--299akc5b432k2sev7g.com/FileData/ckfinder/files/20210708_77AC7662A9A2E470.pdfIn PDF document text
    • https://flour.co.uk/ckfinder/userfiles/files/75370671373.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16081184608890---49637951382.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16100832c1d36e---38864403916.pdfIn PDF document text
    • http://steakclubhn.com/campannas/file/mulimewatagofijes.pdfIn PDF document text
    • http://tms-operation.com/upload/files/34158260470.pdfIn PDF document text
    • http://cleanyachts.it/writable/public/userfiles/file/loxajebeviwazokubutofi.pdfIn PDF document text
    • https://westcoastmovers.ca/wp-content/plugins/super-forms/uploads/php/files/0guibqbslvgff5sdfp10e34ccl/94688434810.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160899babd02ef---64329685305.pdfIn PDF document text
    • http://wowbond.com/upload/Fckeditor/file/faxawoxusisesuvokolone.pdfIn PDF document text
    • http://metalltechnik-kutschi.at/19920824438.pdfIn PDF document text
    • http://hnkingdee.cn/Files/file/2021829119.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/c0110f6117265794f17714c9eb028e60/tokapusiwimovilebirigup.pdfIn PDF document text
    • http://domesticsolutionsagency.com/userfiles/file/tolisufoses.pdfIn PDF document text
    • http://bridgestone-ice-cruiser-7000.ru/ckfinder/userfiles/files/fovarewijepidojetuzaze.pdfIn PDF document text
    • https://dhesient.com/media/fuwokerab.pdfIn PDF document text
    • https://mollis.rs//files/rujizod.pdfIn PDF document text
    • http://alrehabourhome.com/userfiles/files/vusojefimifurujez.pdfIn PDF document text
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/firupesapug.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF14 11200 bytes
SHA-256: 0a5b0e1ccc113e02cdef0c2bee167350ec36cd0b099b2e8ec0979a159d86780b
font_01_sfnt_off0000f8ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000110c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C0 18356 bytes
SHA-256: 277731c31570643e8638b025eeef74aa5a2448b77a1f9a7e7165ff6e6c64c7e5

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